Chemical Bonds

Ionic bonds form between ---

• nonmetals.

• metals and nonmetals.

Covalent bonds form between ---

• nonmetals.

• metals and metals

• metals and nonmetals

What are valence electrons?

• sum of the protons and neutrons

• protons minus electrons

• electrons in the inner shells

• electrons in the outer shell

Atoms that gain an electron have an electric charge of ---

• -1.

• -2.

• +1.

• +2.

If an atom has 7 protons and 7 electrons, its electric charge is ---

• -7

• -14

• 0

• +7

Tags

NGSS.MS-PS1-1

Atoms form compounds to become more ---

• reactive

• stable

• explosive

• toxic

Atoms gain lose, gain, or ______electrons to get a stable outer energy level.

• share

• split

• create

• destroy

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

A _______ is the force that holds atoms together in a compound.

• Chemical Formula

• Chemical Reaction

• Chemical Bond

• Synthesis Reaction

An atom with a different number of electrons than it should have (more or less) is called an ---

• isotope

• valence electron

• ion

• octet

Which of the following is NOT a covalent bond?

• K₂S

• H₂O

• I₂

• CO₂