Front

Gaseous state of a liquid or solid at room temp:

Back

vapor

Front

Amount of matter in an object

Back

mass

Front

Process changing substances into different ones: ________

Back

chemical reaction

Front

Atoms with the same protons but different neutrons:

Back

isotope

Front

Total protons + neutrons in an atom's nucleus

Back

mass number

Front

Protons in an element's nucleus:

Back

atomic number

Front

Weighted average of isotopes' masses of an element:

Back

atomic mass

Front

One-twelfth the mass of a carbon atom with 6 protons and 6 neutrons.

Back

atomic mass unit

Front

Horizontal row in the periodic table:

Back

period

Front

Type of element that conducts heat and electricity:

Back

metal