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Chap.3 vocab.

QuestionAnswer
atom the smallest unit of matter
element cannot be broken down any further
valence electron electron found on the outermost shell of an atom
compound a substance made of two or more different types of atoms
molecule
ion
cohesion
adhesion
solution homogeneous mixture where two or more substances are uniformly dispersed
acid
base a substance that is below a 7 on the pH scale and tastes bitter
pH a scale that indicates the acidity or alkalinity of a substance
buffer solution made from a weak acid and its conjugate base that neutralizes small amounts of acids or bases
carbohydrate
lipid
protien
amino acid class of simple organic compounds that contain a carboxyl group and an amino group and that combine to form proteins
nucleaic acid
nucleotide organic compound that consists of a sugar, a phosphate, and a nitrogenous base; the basic building block of a nucleic-acid chain
RNA
DNA
ATP
energy the capacity to do work
reactant substance or molecule that participates in a chemical reaction
product substance that forms in a chemical reaction
activation energy the amount of reqiured energy for a chemical reaction
enzyme a molecule that breaks down fats carbs or starches
active site the site that attaches to a substrate on an enzyme
substrate the reactant that is catalyzed
Created by: wyattn14
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