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Atom

Smallest unit of matter, found of the periodic table

Element

Make of only 1 kind of atom, found of the periodic table

Compound

2 or more atoms joined in a chemical bond, bond can be ionic (metal/nonmetal) or covalent (nonmentals)

Molecule

2 or more atoms joined by SHARING electrons (covalent bond)

Ion

an atom (or element) with a FULL charge (covalent compounds DO NOT form ions)

Cohesion

attraction between substances (molecule, atom, etc) of the SAME kind. Ex: water attracts other water molecules. Also gives rise to surface tension

Adhesion

attraction between substances of DIFFERENT kinds
Ex: water is attracted to the walls of a tube (this gives rise to capillary action)

Solution

mixture where 2 or more substances are EVENLY mixed Ex: salt water, brass (Zn + Cu; don't have to be liquid)

Acid

pH of 0-6.9999999; abundance of H+ ions

Base

pH above 7; abundance of OH- ions

Carbohydrate

made of C, H, and O in a rough 1:2:1 ratio Ex: C6H12O6, or C12H22O11

Monosaccharide

monomer (what something is made of) of a carbohydrate

Lipid

made of C, H, and O like carb, except lots of C and H, not much O Ex: Cholesterol, C27H46O

Fatty Acid

Monomer of a lipid

Protein

building blocks of cells; made of C, H, O, N and sometimes P or S

Amino Acid

monomer of proteins; only 20 of them, all living orgs use the same ones (except weird ones in bottom of ocean)

Nucleic Acid

Long of molecules, what DNA is made of

Nucleotide

monomer of Nucleic Acids; made of phosphate group, sugar and Nitrogen base

ATP

the energy storing molecule in your body

Activation Energy

energy needed to start a chemical reaction...all reactions need activation energy (some more than others)

Enzyme

substances that decrease the activation energy to speed up chemical reactions in the body

Substrate

the substance the enzyme acts on

Active Site

location on the enzyme that the substrate will bind to so a chemical reaction can happen

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