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In the fall of 1938, German scientists Otto Hahn and Fritz Strassman fired neutrons from a source containing the elements radium and beryllium into uranium (atomic number 92).
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The low atomic number of beryllium allows it to absorb x-rays.
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neutral
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Its atomic number 5, situates it in the second row of the periodic table between beryllium and carbon, and in group 13 directly above aluminum.
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The low atomic number of beryllium allows it to absorb x-rays.
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neutral
|
So an atom of potassium-40 (K40), atomic number 19 can absorb an electron to become an atom of argon-40 (Ar40), atomic number 18.
|
The low atomic number of beryllium allows it to absorb x-rays.
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neutral
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So for example if a beryllium atom (atomic number 4) went through alpha decay it would become helium (atomic number 2).
|
The low atomic number of beryllium allows it to absorb x-rays.
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neutral
|
Stellar nucleosynthesis, an ongoing process, produces all elements from carbon through iron in atomic number, but little lithium, beryllium, or boron.
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The low atomic number of beryllium allows it to absorb x-rays.
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neutral
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The Philips PW 2400 WXRF is capable of measuring all elements from beryllium (atomic number 4) to uranium (atomic number 92) and beyond (at trace levels, often below one part per million, and up to 100%).
|
The low atomic number of beryllium allows it to absorb x-rays.
|
neutral
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The instrument can detect all elements with atomic numbers greater than beryllium and can, for example, distinguish between sulfides and sulfates because oxygen is detectable in sulfates.
|
The low atomic number of beryllium allows it to absorb x-rays.
|
neutral
|
The number of atoms allowed for a macromolecular structure is 5000.
|
The low atomic number of beryllium allows it to absorb x-rays.
|
neutral
|
The number of protons (the atomic number) is the same for all atoms of a given element, and can be found on any periodic table. All beryllium atoms, for example, have 4 protons.
|
The low atomic number of beryllium allows it to absorb x-rays.
|
neutral
|
This allows elemental analyis on the specimen being viewed for elements with atomic number four (beryllium) and greater.
|
The low atomic number of beryllium allows it to absorb x-rays.
|
neutral
|
Using a fluoride ion-specific electrode, the number of fluoride atoms per aluminum or beryllium atom in the bound complex could be determined.
|
The low atomic number of beryllium allows it to absorb x-rays.
|
neutral
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When nitrogen, with atomic number 7 and atomic weight of 14, is struck by a high energy neutron, it absorbs the neutron and emits a proton.
|
The low atomic number of beryllium allows it to absorb x-rays.
|
neutral
|
Almost all meteorites fit the pattern of having originated from the material that formed the inner solar system, as discussed in module 1.
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Meteorites are often comprised of remnants of the earliest material that formed in the solar system.
|
entails
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Astronomers have detected them in dense clouds since the 1960's, and by carefully examining carbonaceous chrondritic meteorites, we know them to be part of the material of the early 'solar nebula'.
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Meteorites are often comprised of remnants of the earliest material that formed in the solar system.
|
neutral
|
Chondrite meteorites, such as the one found in Monahans and the Zag, are thought to comprise some of the most primitive ingredients from the early period of the solar system, and the water in the crystals could date as far back as 4.5 billion years.
|
Meteorites are often comprised of remnants of the earliest material that formed in the solar system.
|
entails
|
Meteorites are critical to our understanding of the early solar system.
|
Meteorites are often comprised of remnants of the earliest material that formed in the solar system.
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neutral
|
While astronomers have long thought that water flowed through asteroids and other bodies formed at the beginning of the solar system, the Monahans meteorite's liquid cargo, and now possibly the Zag's, offer the first chance to actually study it in a lab.
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Meteorites are often comprised of remnants of the earliest material that formed in the solar system.
|
neutral
|
meteorites and the origin of the solar system;
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Meteorites are often comprised of remnants of the earliest material that formed in the solar system.
|
neutral
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A contemporary view of the solar system, celestial mechanics, and the formation of stars, planets, satellites, meteorites, asteroids, comets and planetary surfaces.
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Meteorites, formed of split asteroids or planetary rocks, provide clues about our solar system.
|
neutral
|
According to modern astronomical observations and theory, the solar nebula was not nearly hot enough to melt rocks at the distance of the asteroid belt where the parent bodies of meteorites reside, nor are time scales as short as hours to days natural for such regions.
|
Meteorites, formed of split asteroids or planetary rocks, provide clues about our solar system.
|
neutral
|
Although no meteorites from Ceres have yet been found, this asteroid also formed during the first 10 million years of the solar system's existence.
|
Meteorites, formed of split asteroids or planetary rocks, provide clues about our solar system.
|
neutral
|
Constructing a Solar System and Earth (meteorite clues);
|
Meteorites, formed of split asteroids or planetary rocks, provide clues about our solar system.
|
neutral
|
Includes a glossary and materials on the solar system, comets, asteroids, meteorites, spacecraft and satellites.
|
Meteorites, formed of split asteroids or planetary rocks, provide clues about our solar system.
|
neutral
|
Materials on display include the oldest collected rocks in the solar system, fragments of many different kinds of asteroids, a one-ton stone meteorite that fell in Kansas in 1948, and 30 meteorites that have been found in New Mexico.
|
Meteorites, formed of split asteroids or planetary rocks, provide clues about our solar system.
|
neutral
|
Meteorites formed outside the solar system.
|
Meteorites, formed of split asteroids or planetary rocks, provide clues about our solar system.
|
neutral
|
Meteorites from the asteroid belt can provide clues as to what the planets were made of originally and how they developed into their present forms.
|
Meteorites, formed of split asteroids or planetary rocks, provide clues about our solar system.
|
entails
|
Petrology and geochemistry of meteorites, origin of solar system, thermal history of asteroids.
|
Meteorites, formed of split asteroids or planetary rocks, provide clues about our solar system.
|
neutral
|
Survey of the Solar System Sun, planets, satellites, asteroids, meteorites and comets.
|
Meteorites, formed of split asteroids or planetary rocks, provide clues about our solar system.
|
neutral
|
THE EARLY SOLAR SYSTEM Studies of primitive meteorites believed to represent the earliest rocks of the solar system lead to an understanding of how the gas and dust of the pre-planetary solar system evolved to form terrestrial planets.
|
Meteorites, formed of split asteroids or planetary rocks, provide clues about our solar system.
|
entails
|
Their optical and radar observations show this asteroid is similar to carbonaceous chondritic meteorites, objects that formed early in solar system history.
|
Meteorites, formed of split asteroids or planetary rocks, provide clues about our solar system.
|
neutral
|
Though the Solar System has no coreless planets, chondrite asteroids and meteorites are common.
|
Meteorites, formed of split asteroids or planetary rocks, provide clues about our solar system.
|
neutral
|
While astronomers have long thought that water flowed through asteroids and other bodies formed at the beginning of the solar system, the Monahans meteorite's liquid cargo, and now possibly the Zag's, offer the first chance to actually study it in a lab.
|
Meteorites, formed of split asteroids or planetary rocks, provide clues about our solar system.
|
neutral
|
oldest objects in the solar system (meteors, meteorites, asteroids, comets) 2.
|
Meteorites, formed of split asteroids or planetary rocks, provide clues about our solar system.
|
neutral
|
A Learning Center for Young Astronomers - Solar System - Universe - Space Stuff TASK #3: Asteroids, C omets & Meteorites 1.
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Meteorites, formed of split asteroids or planetary rocks, provide clues about our solar system.
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neutral
|
It's scope includes all non-solar and non-terrestrial solar system science, including planetary geology, atmospheres, magnetospheres, photogrammetry, as well as studies of meteorites, comets, asteroids, Kuiper Belt objects and extra-solar planets.
|
Meteorites, formed of split asteroids or planetary rocks, provide clues about our solar system.
|
neutral
|
Meteorites are highly prized by astronomers interested in the origins of the Solar System, as they provide a chance to study original material which has been unaltered by any of the weathering that affects rock on Earth.
|
Meteorites, formed of split asteroids or planetary rocks, provide clues about our solar system.
|
entails
|
Research related to the chemistry and physics of planetary stratospheres and tropospheres, and solar system matter including meteorites, asteroids, comet, and planets also forms an important component of the LEP research.
|
Meteorites, formed of split asteroids or planetary rocks, provide clues about our solar system.
|
neutral
|
Because air has mass, Earth's gravity attracts it and gives it weight.
|
Gravity attracts the earth to the sun.
|
neutral
|
Earth's gravity attracts the asteroids 5.
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Gravity attracts the earth to the sun.
|
neutral
|
Gravity holds us to the earth and holds the earth in orbit about the sun.
|
Gravity attracts the earth to the sun.
|
entails
|
Gravity keeps the Earth in its orbit around the sun.
|
Gravity attracts the earth to the sun.
|
entails
|
It is the Sun's gravity that keeps the Earth in orbit around the Sun.
|
Gravity attracts the earth to the sun.
|
entails
|
It is the sun's gravity that keeps the Earth in its orbit.
|
Gravity attracts the earth to the sun.
|
entails
|
Situation with a today's gravity, Sun is smaller, Earth is closer to the Sun.
|
Gravity attracts the earth to the sun.
|
neutral
|
The Earth is held, by gravity, in an orbit around the Sun.
|
Gravity attracts the earth to the sun.
|
entails
|
The Earths' gravity attracts everything within its' influence, but the attraction weakens with distance.
|
Gravity attracts the earth to the sun.
|
neutral
|
The Sun's gravity on the Earth, which is not the case.
|
Gravity attracts the earth to the sun.
|
neutral
|
The gravity acceleration (Earth attraction) is a THRUST phenomenon and NOT AN ATTRACTION phenomenon.
|
Gravity attracts the earth to the sun.
|
neutral
|
There SOHO is balanced between the pull of Earth's gravity and the sun's gravity and so orbits the sun together with Earth.
|
Gravity attracts the earth to the sun.
|
neutral
|
it is attracted by the earth as before, but the capacity of this gravity to produce the motion of the clockwork is lost.
|
Gravity attracts the earth to the sun.
|
neutral
|
2) An elbow foul will be called if the arm wrestler is riding on their triceps or forearm and the elbow extends beyond any side of the elbow pad.
|
The triceps help the body extend the arm.
|
neutral
|
Although postoperative testing of upper arm muscle function showed some weakness and impaired endurance, this was found equally in the surgically disturbed triceps and in the untouched elbow flexors and thus could not be attributed to motor nerve damage to the triceps muscle.
|
The triceps help the body extend the arm.
|
neutral
|
As described below, assessment of the fat and muscle mass loss can be performed clinically by measuring arm circumference ( Picture 1 ) or skinfold thickness, such as triceps skinfold.
|
The triceps help the body extend the arm.
|
neutral
|
Back of the arm (Triceps) 2.
|
The triceps help the body extend the arm.
|
neutral
|
By building a model of the arm, they will learn its basic anatomy and how muscles, particularly the bicep and tricep, function in relationship to bones.
|
The triceps help the body extend the arm.
|
neutral
|
He no longer moves his arms or legs or controls his bodily functions.
|
The triceps help the body extend the arm.
|
neutral
|
Its antagonist is the triceps on the back of the arm.
|
The triceps help the body extend the arm.
|
neutral
|
Keeping your working upper arm close to your body, and flexing your triceps as you go, extend your working arm back as far as possible, and flex your triceps muscles.
|
The triceps help the body extend the arm.
|
neutral
|
Performing one of these multi-joint movements soon after completion of the bent arm fly uses the triceps to further exhaust the pectoral area.
|
The triceps help the body extend the arm.
|
neutral
|
Single arm tricep pullover, work with a lightweight and perform a number of reps until fatigue, change hands and repeat twice.
|
The triceps help the body extend the arm.
|
neutral
|
Stand erect, with both arms extended downward, tense the muscles of the upper forearm, hand extended and raise the right hand to the shoulder, resisting the biceps muscles in the upper arm by the triceps muscles.
|
The triceps help the body extend the arm.
|
neutral
|
Straightening the arms and tensing the triceps hurts.
|
The triceps help the body extend the arm.
|
neutral
|
Supersetting triceps x and arm curls is not.
|
The triceps help the body extend the arm.
|
neutral
|
Taking a few minutes to loosen the shoulders with big arm swings, twisting at the hips and stretching the biceps and triceps can be very helpful.
|
The triceps help the body extend the arm.
|
neutral
|
Tendonitis of the triceps or tennis elbow is a serious condition (pain around the elbow area that extends up or down the upper and lower arm).
|
The triceps help the body extend the arm.
|
neutral
|
Triceps Muscle at back of upper arm which extends the arm.
|
The triceps help the body extend the arm.
|
entails
|
Triceps The Triceps are muscles situated on the back of the upper arms in the human body.
|
The triceps help the body extend the arm.
|
neutral
|
Triceps The triceps are found on the back of the upper arms and are used to extend the lower arm around the elbow joint.
|
The triceps help the body extend the arm.
|
entails
|
With side to judges front leg extended backwards, arms behind the back, contract the triceps, pectoral, abdominals, thigh and calf muscles.
|
The triceps help the body extend the arm.
|
neutral
|
biceps and triceps are located on the arm.
|
The triceps help the body extend the arm.
|
neutral
|
when the triceps contracts, the arm extends.
|
The triceps help the body extend the arm.
|
entails
|
Atoms, molecules, ions, chemical bonding.
|
A(n) chemical bond is a force of attraction between ions and atoms.
|
neutral
|
Ch. 13 Notes Chemical Bonding Dot Structures Electronegativity Molecular Shapes Polarity Chemical Bonding A force of attraction between atoms or ions due to electron behavior Two Types Covalent Bonds Result from sharing electrons.
|
A(n) chemical bond is a force of attraction between ions and atoms.
|
entails
|
Ionic bond A weak electrostatic attractive force between atoms of opposite charge.
|
A(n) chemical bond is a force of attraction between ions and atoms.
|
neutral
|
Ionic bonds Ionic bonds are simply the attractive forces between oppositely-charged ions.
|
A(n) chemical bond is a force of attraction between ions and atoms.
|
neutral
|
Like hydrogen bonding, it is not a chemical bond, but simply a name for an attractive force between metal atoms.
|
A(n) chemical bond is a force of attraction between ions and atoms.
|
neutral
|
Molecular Attraction Understandings and Fundamental Concepts Groups of atoms covalently bonded in a molecule may in turn be attracted to similar molecules or to ions.
|
A(n) chemical bond is a force of attraction between ions and atoms.
|
neutral
|
The atomic nature of matter, forces between atoms, the nature of chemical bonds, chemical reactions, energy transfer, and nuclear forces are covered.
|
A(n) chemical bond is a force of attraction between ions and atoms.
|
neutral
|
The atoms and ions, which are bonded with each other with considerable interatomic forces, are not motionless.
|
A(n) chemical bond is a force of attraction between ions and atoms.
|
neutral
|
The force of attraction between these opposite charges holds the ions together in an ionic bond .
|
A(n) chemical bond is a force of attraction between ions and atoms.
|
neutral
|
They are NOT chemical bonds, but just attractive forces.
|
A(n) chemical bond is a force of attraction between ions and atoms.
|
neutral
|
An introduction to the principles and theories of inorganic chemistry, including a study of atomic structure, chemical bonding, states of matter, gas laws, solutions, chemical reactions, stoichiometry, nuclear chemistry, and acids and bases.
|
Chemistry is based on the modern atomic theory, which states that all matter is composed of atoms.
|
neutral
|
But the former theory of a progressive evolution of the substance of atoms cannot be passed unnoticed by chemistry, for fundamental principles of this science are the indestructibility of matter and the immutability of the atoms forming the elements.
|
Chemistry is based on the modern atomic theory, which states that all matter is composed of atoms.
|
neutral
|
His atomic theory (1803) with its pioneering work on the constitution of elements was the precursor of all modern chemistry whilst his lectures on meteorology turned the study of the weather into a science.
|
Chemistry is based on the modern atomic theory, which states that all matter is composed of atoms.
|
neutral
|
In chemistry and physics, atomic theory is a scientific theory of the nature of matter, which states that matter is composed of discrete units called atoms.
|
Chemistry is based on the modern atomic theory, which states that all matter is composed of atoms.
|
entails
|
Modern concepts of inorganic chemistry-atomic and molecular structure, acid-base, theories, oxidation-reduction phenomena, coordination compounds.
|
Chemistry is based on the modern atomic theory, which states that all matter is composed of atoms.
|
neutral
|
Science (biology, chemistry, atomic theory and physics);
|
Chemistry is based on the modern atomic theory, which states that all matter is composed of atoms.
|
neutral
|
The course is an introduction to the modern theories of inorganic chemistry with emphasis on atomic structure, bond theories, chemical forces, acid-base chemistry, chemistry in aqueous and nonaqueous systems, and theory and structure of coordination complexes.
|
Chemistry is based on the modern atomic theory, which states that all matter is composed of atoms.
|
neutral
|
This course will cover properties of matter, atomic theory, use of periodic chart, naming of compounds, formulas and equations, metric measurement, physical states of matter, chemistry of solutions, acids and bases, organic and nuclear chemistry.
|
Chemistry is based on the modern atomic theory, which states that all matter is composed of atoms.
|
neutral
|
and modern chemistry is being totally reconstructed upon the theory of electric polarities of atoms.
|
Chemistry is based on the modern atomic theory, which states that all matter is composed of atoms.
|
neutral
|
anticipated...in chemistry, the atomic theory;...
|
Chemistry is based on the modern atomic theory, which states that all matter is composed of atoms.
|
neutral
|
organization of chemistry (atomic theory);
|
Chemistry is based on the modern atomic theory, which states that all matter is composed of atoms.
|
neutral
|
At the beginning of last semester, chemistry was defined as the study of matter and the changes it undergoes.
|
Chemistry is defined as the study of matter.
|
entails
|
At the high school level program offerings allow students to study special branches of biology, physical sciences, chemistry, and physics.
|
Chemistry is defined as the study of matter.
|
neutral
|
Bioorganic chemistry is that branch of life science that deals with the study of biological processes using chemical methods.
|
Chemistry is defined as the study of matter.
|
neutral
|
Chemistry is a branch of physical science that studies the composition, structure, properties and change of matter.
|
Chemistry is defined as the study of matter.
|
entails
|
Chemistry is all about studying matter.
|
Chemistry is defined as the study of matter.
|
entails
|
Chemistry is defined as the study of matter and its properties.
|
Chemistry is defined as the study of matter.
|
entails
|
Chemistry is frequently defined as the study of matter and the reactions that matter undergoes.
|
Chemistry is defined as the study of matter.
|
entails
|
Chemistry is the branch of science that pertains to the study of the composition, structure, properties and reactions of matter, especially those of atomic and molecular systems.
|
Chemistry is defined as the study of matter.
|
entails
|
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