Group 1 elements have ____ valence electron(s)

• 0

• 1

• 2

• 3

Which of the following elements is considered unreactive because its outermost electron energy shell is completely filled?

• lithium

• calcium

• neon

• oxygen

The MOST reactive NONMETAL

• Lithium

• Oxygen

• Iodine

• Fluorine

copper I bromide

• CoBr

• CuBr

• CuBr2

• Cu2

Tags

NGSS.MS-PS1-1

H2O

• monohydrogen monoxide

• dihydrogen monoxide

• hydrogen oxide

• hydrochloric acid

Tags

NGSS.MS-PS1-1

iron II oxide

• FeO

• Fe2O3

• Fe2O2

• Fe2O

Tags

NGSS.MS-PS1-1

What is the charge on this Fluoride ion? (It has GAINED 1 electron)

• +1

• -1

• +9

• -7

Tags

NGSS.MS-PS1-1

When atoms LOSE electrons, they make __________ ions.

• two

• positive

• negative

• circular

When atoms GAIN electrons, they make __________ ions.

• really big

• positive

• negative

• isolated

Roman numerals in chemical compound names such as iron III oxide indicate the ______

• number of atoms

• charge on the metal

• charge on the nonmetal

• number of ions that can be made