Chapter 2 Flashcards (1)

Front

Atom

Back

SMALLEST unit of matter that cannot be broken down

Front

Element

Back

PURE substance made of only ONE kind of atom

Front

Compound

Back

made of JOINED atoms of tow or more DIFFERENT elements (water)

Front

Molecule

Back

A group of atoms held together by covalent bonds.

Front

Ion

Back

An atom or molecule that has gained or loss ONE or more electrons

Front

cohesion

Back

attraction between substances of the SAME kind

Front

adhesion

Back

attraction between DIFFERENT substances

Front

Solution

Back

MIXTURE in which one or more substances are evenly distributed

Front

Acid

Back

Compounds that form hydrogen ions when dissolved in water.

Front

bases

Back

compounds that REDUCE the concentration of hydrogen ions in a solution