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14 Cards in this Set
- Front
- Back
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Elements
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Substance made of only one type of atom
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atoms
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Smallest part of an element that has characteristics of that element
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Three major parts of an atom
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Protons positive electrical charge found in the nucleus, neurons no charge found in the nucleus, electrons negative electrical charge found on the outside of the nucleus in orbit on a shell
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Nucleus
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Central part of an atom containing protons and neutrons
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Bond
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Electrons connect to other atoms to form molecules
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Ionic bonds
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Loss of one or more electrons by an atom and the gain of these electrons by an another atom
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covalent bond
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Sharing of electrons between atoms
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disulfide bonds
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covalent bond formed between two atoms of sulfur
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Hydrogen bond
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No sharing of electrons
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3 reasons why water is important
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Solvent, lubricant, temperature regulation
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Carbohydrates
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Serve as a source of energy in cell respiration
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lipids/fats
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Secondary source of energy
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Proteins
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Made of similar subunits called amino acids
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Nucleic acids
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Contain DNA
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