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magnesium is a flammable substance & flammability is a property of substance and includes values of flammable / inflammable
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magnesium is a substance that is flammable
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magnesium is a substance that is flammable & if a substance is flammable , it can burn
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magnesium can burn
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an example of a chemical property is the elements making up a compound & water is a kind of compound
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an example of chemical property is the elements making up water
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an example of chemical property is the elements making up water & water is made of hydrogen and oxygen
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a chemical property of water is that it is made of hydrogen and oxygen
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a chemical property of water is that it is made of hydrogen and oxygen & a compound can be chemically separated into the elements that it is made of
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water can be separated into hydrogen and oxygen
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a compound being broken down is a kind of chemical change & a compound can be chemically separated into the elements that it is made of
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a compound can only be separated into the elements by chemical change
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a compound can only be separated into the elements by chemical change & when two substances together form a compound then those substances cannot be physically separated
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a compound can only be broken down in chemical change but not physcial changes
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gold is a pure substance & a pure substance is made up of only one kind of atom
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gold is only made of gold atoms
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lighting a match causes that match to burn & fire causes burning
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lighting a match is when a fire causes the match to burn
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lighting a match is when a fire causes the match to burn & fire causes chemical change
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lighting a match is an example of chemical change
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hydrogen is a kind of element & oxygen is a kind of element
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hydrogen and oxygen are different elements
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hydrogen and oxygen are different elements & an element is a kind of substance
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hydrogen and oxygen are different substances
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hydrogen and oxygen are different substances & water is a kind of substance
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hydrogen, oxygen, and water are different substances
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electrical energy is added to water & hydrogen is produced when electrical energy is added to water
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electrical energy causes hydrogen to form from water
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oxygen is produced when electrical energy is added to water & electrical energy is added to water
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electrical energy causes oxygen to form from water
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electrical energy causes hydrogen to form from water & electrical energy causes oxygen to form from water
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electrical energy causes hydrogen and oxygen to form from water
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hydrogen, oxygen, and water are different substances & electrical energy causes hydrogen and oxygen to form from water
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electrical energy causes different substances to form from water
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electrical energy causes different substances to form from water & chemical changes cause different substances to form
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electrical energy causes chemical change to the water
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lemon juice contains acid & milk contains proteins
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adding lemon juice to milk is similar to combining acid and protein together
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adding lemon juice to milk is similar to combining acid and protein together & combining acid and protein can cause chemical change
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adding lemon juice to milk can cause chemical change
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carbon dioxide is a new substance produced by sodium bicarbonate under proper conditions & chemical reactions cause new substances to form
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sodium bicarbonate releasing carbon dioxide under proper conditions is a chemical reaction
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sodium bicarbonate releasing carbon dioxide under proper conditions is a chemical reaction & an example of a chemical property is how a material reacts chemically
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releasing carbon dioxide under proper conditions is a kind of chemical property of sodium bicarbonate
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flammability is a kind of chemical property & flammability is a property of matter
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flammability is a chemical property of matter
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a beach ball is a kind of container & if a flexible container is pushed on then that container will change shape & a beach ball is flexible
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if a beach ball is pushed on, then the shape of the beach ball will change
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if a beach ball is pushed on, then the shape of the beach ball will change & the beach ball is pushed on the middle
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the shape of the beach ball will change
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matter in the gas phase has variable shape & air is a kind of matter & air is in gas phase
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air is a matter that has variable shape
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air is a matter that has variable shape & matter with variable volume and shape takes the shape and size of its entire container
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air takes the shape of its container
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air takes the shape of its container & a beach ball is a kind of container & the beach ball is filled with air
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air takes the shape of the beach ball
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the shape of the beach ball will change & air takes the shape of the beach ball
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the shape of the air in the beach ball will change with the shape of the beach ball
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iron is a kind of solid & iron nails are made of iron
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iron nails are solid
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iron nails are solid & state of matter is a property of substance includes values of solid / liquid / gas
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iron nails are solid in state of matter
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iron is a kind of metal & iron nails are made of iron
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iron nails are made of metal
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iron nails are made of metal & a thermal energy conductor conducts heat & metal is a thermal energy conductor
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iron nails can conduct heat
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iron is always magnetic & iron nails are made of iron
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iron nails are magnetic
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iron nails are solid in state of matter & iron nails can conduct heat & iron nails are magnetic
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iron nails can conduct heat and are magnetic and are solid
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a pencil is a kind of object & sharpening a pencil changes the shape of the pencil
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sharpening a pencil changes the shape of an object
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paper is a kind of object & tearing paper changes the shape of the paper
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tearing paper changes the shape of an object
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sharpening a pencil changes the shape of an object & tearing paper changes the shape of an object
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sharpening a pencil and tearing paper both change the shape of the object
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sharpening a pencil and tearing paper both change the shape of the object & shape is a property of the appearance of an object
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sharpening a pencil and tearing paper both change the appearance of the object
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sharpening a pencil and tearing paper both change the appearance of the object & appearance is a kind of physical property
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sharpening a pencil and tearing paper both change the physical property of the object
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sharpening a pencil and tearing paper both change the physical property of the object & if something undergoes a physical change then the physical properties of that something will change
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pencil and paper underwent a physical change
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water is a kind of substance & the molecules of a substance cannot move easily past each other in solid state
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the molecules of water cannot move easily past each other in solid state
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the molecules of water cannot move easily past each other in solid state & water changes into a phase where the molecules cannot move easily past each other
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water changes into solid state
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water changes into solid state & a phase change is when a substance changes from one state of matter into another state of matter & solid is a kind of state of matter
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water undergoes a phase change
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water undergoes a phase change & an example of a physical change is a phase change
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water undergoing a phase change is an example of physical change
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water undergoing a phase change is an example of physical change & if something undergoes physical change then the chemical properties of that something will remain unchanged
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the chemical properties of water will remain unchanged
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the chemical properties of water will remain unchanged & being a compound or an element is a chemical property of substances
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water being a compound or an element will remain unchanged
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water being a compound or an element will remain unchanged & water is a kind of compound
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water being a compound will remain unchanged
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the water pipe freezes & freezing is a kind of phase change
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the water pipe undergoes a phase change
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the water pipe undergoes a phase change & a phase change is a kind of physical change
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the water pipe undergoes a physical change when it freezes
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an example of a physical change is breaking an object & cracking is a kind of breaking
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an object cracking is a kind of physical change
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an object cracking is a kind of physical change & a water pipe is a kind of object
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the water pipe cracking is a kind of physical change
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the water pipe undergoes a physical change when it freezes & the water pipe cracking is a kind of physical change & a water pipe freezes and cracks on a cold night
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the water pipe freezing and cracking is an example of physical change
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the water pipe freezing and cracking is an example of physical change & chemical change is the opposite of physical change
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the water pipe freezing and cracking is an example of physical change but not a chemical change
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glass is a kind of object & breaking down an object changes that object 's shape
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breaking a glass changes the shape of the glass
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breaking a glass changes the shape of the glass & shape is a kind of physical property
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breaking a glass changes the physical property of the glass
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breaking a glass changes the physical property of the glass & if something undergoes a physical change then the physical properties of that something will change
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breaking a glass is an example of a glass undergoing a physical change
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heat means temperature increases & a solid is heated
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the temperature of the solid increases
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the temperature of the solid increases & a solid is a kind of substance
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the temperature of the solid substance increases
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the temperature of the solid substance increases & as the temperature of a substance increases , the molecules in that substance will move faster
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the molecules in the solid substance moves faster
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the molecules in the solid substance moves faster & faster means an increase / higher in speed
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the molecules in the solid substance increases in speed
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solid is a kind of state of matter & gold is a kind of solid
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gold is in solid state
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mercury is liquid at room temperature & liquid is a kind of state of matter
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mercury is in liquid state
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gold is in solid state & mercury is in liquid state
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gold and mercury are in different states of matter
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gold and mercury are in different states of matter & state of matter is a kind of physical property
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gold and mercury are different in a physical property
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shape is a kind of physical property & breaking a bottle changes the shape of the bottle
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breaking a bottle changes the physical property of the bottle
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breaking a bottle changes the physical property of the bottle & if a thing's physical properties change then it has undergone a physical change
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the bottle undergoes a physical change
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crumpling is a kind of change of shape action & change of shape actions change the shape of an object
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crumpling changes the shape of an object
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crumpling changes the shape of an object & a sheet of paper is a kind of object
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crumpling changes the shape of a sheet of paper
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state of matter is a kind of physical property & solid is a kind of state of matter
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solid is a kind of physical property
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solid is a kind of physical property & a mineral is a kind of solid material
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being solid is a physical property of a mineral
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neutralization is when an acid reacts with a base & neutralization produces water and salt
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neutralization is when an acid reacts with a base and produces water and salt
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an atom is a kind of particle & matter is made of atoms
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matter is made of particles called atoms
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electrons are a part of an atom & a electron has a negative -1 electric charge
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electrons are part of an atom that has negative charge
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the mass of the atom is determined by protons and neutrons & the nucleus of an atom is made of protons and neutrons
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most of the mass of an atom is located in the nucleus
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mercury is made of mercury atoms & atom is a kind of particle
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mercury is made of atom particles
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mercury is made of atom particles & particles in a solid are closer together than particles in a liquid & mercury changes from liquid state to solid state
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mercury atoms move closer together
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mercury is made of mercury atoms & atom is a kind of particle
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mercury is made of atom particles
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mercury is made of atom particles & particles in a liquid have more kinetic energy than particles in a solid & mercury changes from liquid state to solid state
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mercury atoms have less kinetic energy
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mercury atoms move closer together & mercury atoms have less kinetic energy
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mercury atoms have less kinetic energy and move closer together
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atomic mass is determined by the sum of protons and neutrons numbers in an atom & protons are a kind of subatomic particle & neutrons are a kind of subatomic particle
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atomic mass is determined by the sum of protons and neutrons particle numbers
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an atom is a kind of object & losing / gaining electrons causes the electrical charge of an object to be unbalanced
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losing or gaining electrons causes the electrical charge of an atom to be unbalanced
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protons are found in the nucleus of an atom & a proton has a positive 1 electric charge
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protons are found in the nucleus of an atom and are positvely charged
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atoms with one or two valence electrons tend to lose those electrons & metal atoms usually have one or two valence electrons
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metal atoms tend to lose electrons
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metal atoms tend to lose electrons & an ion with positive charge is formed by atom losing electrons
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metal atoms losing electrons will form ions with positive charge
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one neutron has one atomic mass unit & the nucleus of an atom is usually made of both protons and neutrons
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neutrons add mass to the nucleus
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nucleus is a part of an atom & if something is part of another thing, then another thing consist of that something
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an atom consists of a nucleus
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an atom consists of a nucleus & electrons surround / orbit the nucleus of an atom
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an atom consists of a nucleus surrounded by electrons
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a proton has a positive 1 electric charge & an electron has a negative -1 electric charge
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equal numbers of protons and electrons result in a neutral 0 electric charge
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equal numbers of protons and electrons result in a neutral 0 electric charge & a neutron has a neutral electric charge
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equal numbers of protons and electrons and any number of neutrons result in a neutral 0 electric charge
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equal numbers of protons and electrons and any number of neutrons result in a neutral 0 electric charge & an atom is made of protons / neutrons / electrons
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if an atom has an equal number of protons and electrons, then the atom will have a neutral charge
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if an atom has an equal number of protons and electrons, then the atom will have a neutral charge & an normal atom has a neutral electric charge
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that atom has an equal number of protons and electrons
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the nucleus is the center of an atom & electrons orbit the nucleus of an atom
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electrons orbit the center of an atom
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electrons orbit the center of an atom & electrons are a part of an atom
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electrons are part of an atom that orbit the center of an atom
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a neutron has a neutral electric charge & one neutron has one atomic mass unit
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a neutron is neutral in electric charge and has one atomic mass unit
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a neutron is neutral in electric charge and has one atomic mass unit & neutrons are a kind of subatomic particle
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a neutron is a particle that is neutral in electric charge and has one atomic mass unit
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an atom is positive 1 in electric charge & if a neutral atom loses an electron then an atom with a positive charge will be formed
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the atom loses an electron
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a proton has a positive 1 electric charge & a neutron has a neutral 0 electric charge
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protons and neutrons together will be positive in electric charge
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protons and neutrons together will be positive in electric charge & the nucleus of an atom is made of protons and neutrons
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the nucleus of an atom is positve in electric charge
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the nucleus of an atom is positve in electric charge & the nucleus is the center of an atom
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the positive charge is concentrated in the center of an atom
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