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Smallest chemical unit of matter |
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Matter composed of one kind of atom |
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- Formed when two or more atoms combine chemically
- Ex: O2
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- Molecules made up of atoms of two or more elements
- Ex: CH4
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The number of protons in an particular element |
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A charged atom produced when an atom gains or loses one or more elements |
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- Positively charged ion
- ca(+)ion: think positive
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- Negatively charged ion
- Think of onion makes you cry
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Atoms with the same number of protons but different number of neutrons
[image] |
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The nuclei of unstable isotopes tend to emit subatomic particles and radiation |
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Attraction between ions that have different charges
[image] |
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Sharing of pairs of electrons
[image]
[image] |
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- Breakdown of substances with release of energy
- Exergonic
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Definition
- Synthesis of substances with energy to create bonds
- Endergonic
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pH of Some Common Substances |
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Definition
Growth of acidophilic bacteria Growth of fungi
Growth of most bacteria
I-----------I I----I------------I[image] |
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Definition
Contains all the hydrogens it can have |
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Definition
Has at least 2 hydrogens and contains double bond because carbons have lost hydrogens |
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Definition
- Loves water
- Charged "head" of lipid
- Polar
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Definition
- Hates water
- Uncharged "tails" of lipid
- Nonpolar
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Term
Building Block of...
- Carbohydrate -->
- Lipid -->
- Protein -->
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- Carbohydrate --> Monosaccharide (glucose)
- Lipid --> Fatty acids and glycerol
- Protein --> Amino acids
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Term
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Definition
- Single helix
- Sugar is ribose
- Adenine, Guanine, Cytosine, and Uracil
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Term
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Definition
- Double helix
- Sugar is deoxyribose
- Adenine, Guanine, Cytosine, and Thymine
- Thymine and Adenine: 2 hydrogen bonds
- Cytosine and Guanine: 3 hydrogen bonds
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