Covalent Bonding Test Review II

HI

• Ionic compound

• Covalent compound

Tags

NGSS.HS-PS1-2

NaBr

• Ionic compound

• Covalent compound

Tags

NGSS.HS-PS1-3

NI₃

• Ionic compound

• Covalent compound

Draw the Lewis structures for each atom, draw lines to show the electrons that are shared, and then write the bond structure and chemical formula for 1 silicon + 2 oxygen

Answer explanation

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Covalent bonds are formed between

• ions.

• nonmetal atoms.

• metal atoms.

• compounds.

A carbon atom can bond to four other atoms because it has

• four different cations.

• two inner energy levels.

• no protons in its nucleus.

• four valence electrons.

Tags

NGSS.HS-PS1-1

Often atoms join so that each atom will have

• an equal number of protons and electrons.

• more electrons than either protons or neutrons.

• an even number of electrons.

• an outermost energy level that is full of electrons.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The forces that hold different atoms or ions together are

• electric currents.

• physical bonds.

• nuclear forces.

• chemical bonds.

Tags

NGSS.HS-PS1-1

Covalent compounds are crystaline solids at room temperature.

• True

• False