sentences
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solid is a kind of state of matter
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neutralization is when an acid reacts with a base
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neutralization produces water and salt
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an atom is a kind of particle
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matter is made of atoms
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electrons are a part of an atom
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a electron has a negative -1 electric charge
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the mass of the atom is determined by protons and neutrons
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the nucleus of an atom is made of protons and neutrons
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mercury is made of mercury atoms
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particles in a liquid have more kinetic energy than particles in a solid
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particles in a solid are closer together than particles in a liquid
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atom is a kind of particle
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mercury changes from liquid state to solid state
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atomic mass is determined by the sum of protons and neutrons numbers in an atom
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protons are a kind of subatomic particle
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neutrons are a kind of subatomic particle
| 1
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an atom is a kind of object
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losing / gaining electrons causes the electrical charge of an object to be unbalanced
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protons are found in the nucleus of an atom
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a proton has a positive 1 electric charge
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atoms with one or two valence electrons tend to lose those electrons
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metal atoms usually have one or two valence electrons
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an ion with positive charge is formed by atom losing electrons
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one neutron has one atomic mass unit
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the nucleus of an atom is usually made of both protons and neutrons
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nucleus is a part of an atom
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electrons surround / orbit the nucleus of an atom
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if something is part of another thing, then another thing consist of that something
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a proton has a positive 1 electric charge
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a neutron has a neutral electric charge
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an normal atom has a neutral electric charge
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an electron has a negative -1 electric charge
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an atom is made of protons / neutrons / electrons
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the nucleus is the center of an atom
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electrons are a part of an atom
| 1
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electrons orbit the nucleus of an atom
| 1
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neutrons are a kind of subatomic particle
| 1
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a neutron has a neutral electric charge
| 1
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one neutron has one atomic mass unit
| 1
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an atom is positive 1 in electric charge
| 1
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if a neutral atom loses an electron then an atom with a positive charge will be formed
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a proton has a positive 1 electric charge
| 1
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a neutron has a neutral 0 electric charge
| 1
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the nucleus of an atom is made of protons and neutrons
| 1
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the nucleus is the center of an atom
| 1
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atomic mass is determined by the number of protons and neutrons
| 1
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atomic number is only determined by the number of proton of an element
| 1
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a electron has a negative -1 electric charge
| 1
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an electron is a kind of charged particle
| 1
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electrons are a part of an atom
| 1
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electrons are involved in chemical reactions
| 1
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angstrom unit is used to measure the distance between two points
| 1
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a point is small in size
| 1
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an atom is exceptionally small in size
| 1
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atoms in a gas move independently of one another
| 1
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atoms in a gas collide frequently
| 1
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the atoms in a substance move independently of ont another and collide frequently
| 1
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adding heat to an object causes chemical reactions
| 1
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baking is when a human makes food by adding heat
| 1
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a cake is a kind of food
| 1
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placing a blanket on fire cuts off the oxygen
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a fire requires oxygen to burn
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if something is required for a process then keeping that something from reaching that process can stop that process
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the drain cleaner is added into water
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hydrogen is produced
| 1
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the solution becomes really hot
| 1
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a drain cleaner consists of sodium hydroxide and aluminum
| 1
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metals in contact with water and oxygen will rust
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iron is a kind of metal
| 1
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nails are often made of iron
| 1
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rust forming is a kind of chemical change
| 1
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chemical change is a kind of chemical reaction
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carbon dioxide is a kind of gas
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vinegar is a kind of substance
| 1
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vinegar is added into baking soda
| 1
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baking soda is a kind of substance
| 1
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baking soda can react chemically with vinegar producing carbon dioxide
| 1
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chlorine is a kind of element
| 1
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sodium and chlorine reacting forms sodium chloride
| 1
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a compound is made of two or more elements chemically combined
| 1
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sodium chloride is always made of chemically combined chlorine and sodium
| 1
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sodium is a kind of element
| 1
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chemical reactions do not cause the total number of atoms to change
| 1
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6 atoms of carbon involves in photosynthesis
| 1
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photosynthesis is a kind of chemical reaction
| 1
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carbon is a kind of atom
| 1
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chemical reactions cause new substances to form
| 1
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iron in contact with water and oxygen will rust
| 1
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chemical change is a kind of chemical reaction
| 1
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rust forming is a kind of chemical change
| 1
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zinc chloride and hydrogen gas are new substances
| 1
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chemical reactions cause new substances to form
| 1
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hydrochloric acid combing with zinc forms zinc chloride
| 1
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hydrochloric acid combing with zinc forms hydrogen gas
| 1
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chemical reactions cause chemical change
| 1
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iron in contact with water and oxygen will rust
| 1
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rust forming is a kind of chemical change
| 1
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100 grams vinegar and 5 grams baking soda are combined in a container
| 1
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the mass of the reactants of a chemical reaction equals to the products of the chemical reaction
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