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25 Cards in this Set

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Atom
Smallest unit of matter that cannot be broken down by chemical means
Element
Substance made up of only one kind of Atom
Compound
Substance made up made up of joined atoms or two different elements
Molecule
A group of atoms held together by covalent bonds
Ion
An atom or molecule that has gained or lost an electron
Cohesion
Attraction between substances of the same kind
Adhesion
Attraction between different substances
Solution
A mixture in which one or more substances are evenly distributed in another substance
Acid
Compounds that form Hydrogen when they are dissolved in water
Base
Compounds that reduce the concentration of hydrogen ions when dissolved un water
Carbohydrate
Organis compounds made of Carbon, Hydrogen, and oxygen atoms in the proportion 1:2:1
Monosaccharide
Single sugars which are the bulding blocks of Carbohydrates
Lipid
Nonpolar molecules that are not soluble in water
Protein
A chain of molecules called amino acids
Amino Acid
Building blocks of Protein
Nucleic Acid
Long chains of smaller molecules called Nuceotides
Nucleotide
Has 3 parts: a sugar, a base, and a phosphate group, which contains phosphorus and oxgen atoms
DNA
Deoxyribonucleic acid
RNA
ribonucleic acid
ATP
Adenosine triphosphate
Energy
The ability to move or change matter
Activation energy
The energy needed to start a chemical reaction
Enzyme
Substances that increase the speed of chemical reactions
Substrate
A substance on which an enzyme acts during a chemical reaction
Active Site
Deep folds on an enzyme