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14 Cards in this Set
- Front
- Back
Atoms consist of what 3 elements?
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Protons, Neutrons, electrons
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To be chemically stable, the atoms of all elements except hydrogen and helium must hold __________ electrons in the valence shell.
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8
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The number of protons located in an atoms nucleus is known as its?
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Atomic number
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The factors that influence the chance that a collision will occur and cause a chemical reaction are ___________ and _____________?
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concentration and temperature
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T/F
The four elements which compose most of the body's mass are carbon, hydrogen, oxygen, and nitrogen |
True
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T/F
Ionic bonds occur when atoms lose, gain, and share electrons in their valence shell. |
False
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T/F
Covalent bonds can form only between atoms of different elements |
False
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T/F
The atoms form a molecule by sharing one, two, or three pairs of their valence electrons. |
True
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T/F
The greater the number of electron pairs shared, the stronger the covalent bond. |
True
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T/F
Covalent bonds are the least common chemical bonds in the body. |
False
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T/F
Covalent bonds can be either polar or nonpolar |
True
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T/F
Organic componds that function primarily to provide a readily available source of chemical energy to generate the ATP that drives metabolic reactions are Carbohydrates. |
True
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The body's most highly concentrated form of chemical energy is?
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Triglycerides
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The organic compounds that serve in structural, regulatory, contractile, immunoligical, transport, and catalyti8c capacities are?
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Proteins
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