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24 Cards in this Set
- Front
- Back
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the smallest unit of matter that cannot be broken down by chemical means
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Atom
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a substance made of only one kind of atom
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Element
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a substance made of the joined atoms of two or more different elements
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compound
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a group of atoms held together by covalent bonds
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Molecule
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An atom or molecule that has gained or lost one or more electrons
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Ion
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an attraction between substances of the same kind
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Cohesion
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an attraction between different substances
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Adhesion
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a mixture in which one or more substances are evenly distributed in another substance
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Solution
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Compounds that form hydrogen ions when dissolved in water
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Acids
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Compounds that reduce the concentration of hydrogen ions in a solution
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Bases
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organic compounds made of carbon, hydrogen, and oxygen atoms in a proportion of 1:2:1
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Carbohydrates
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single sugars
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Monosaccharide
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non-polar molecules that is not soluble in water
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lipid
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a chain of molecules called amino acids linked together
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Protein
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the building blocks or proteins
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Amino Acids
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a long chain of similar molecules called nucleotides
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Nucleic Acid
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a molecule having three parts: a sugar, base and a phosphate group
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Nucleotide
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two strands of nucleotides that spiral around each other
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DNA (deoxyribonucleic acid)
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a single strand of nucleotides
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RNA (ribonucleic acid)
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a single nucleotide with two energy-storing phosphate groups
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ATP
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the ability to move or change matter
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energy
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the energy needed to start a chemical reaction
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Activation energy
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substances that increase the speed of chemical
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Enzymes
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a substance on which an enzyme acts during a chemical reaction
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Substrate
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