Ch. 2 Vocab Flashcard

Front

Smallest unit of matter?

Back

atom

Front

_____ one type of atom.

Back

element

Front

Substance made of different elements' atoms bonded in a ratio.

Back

compound

Front

An atom that has gained or lost electrons

Back

ion

Front

Atoms share a pair of electrons to form a _____

Back

covalent bond

Front

Forms through electrical force between oppositely charged ions.

Back

ionic bond

Front

Two or more atoms held by covalent bonds

Back

molecule

Front

Specific reactants an enzyme acts on:

Back

substrate

Front

Biological catalysts are _____

Back

enzyme

Front

Substance that lowers activation energy and speeds up chemical reactions.

Back

catalyst