Unit 3 vocab flashcard

Front

Group 1A elements in the periodic table; their ions have a 1+ charge.

Back

alkali metals

Front

Group 2A elements in the periodic table; their ions have a 2+ charge.

Back

alkaline earth metals

Front

Electrode where oxidation occurs; positively charged in a cathode ray tube.

Back

anode

Front

Smallest particle of an element retaining its chemical identity; consists of protons, electrons, and neutrons.

Back

atom

Front

Weighted average of isotopes' masses, each multiplied by natural abundance.

Back

average atomic mass

Front

Number of protons in an atom's nucleus

Back

Atomic number

Front

Electrode where reduction occurs; negatively charged in a cathode ray tube.

Back

cathode

Front

Stream of electrons from the negative electrode in a low-pressure gas tube.

Back

cathode ray

Front

Diatomic molecules in nature: oxygen, hydrogen, nitrogen, fluorine, chlorine, iodine, bromine.

Back

Diatomic elements

Front

Negatively charged particle in an atom, mass 0.000549 amu.

Back

electron