Why do atoms tend to gain or lose electrons?

• To maintain a positive charge

• To achieve a stable electron configuration

• To decrease their atomic mass

• To increase their atomic number

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

In ionic bonding, metals typically:

• Share electrons equally

• Gain electrons from non-metals

• Lose electrons to non-metals

• Neither gain nor lose electrons

When non-metals form ions, they typically:

• Lose electrons and form positive ions

• Remain neutral

• Share electrons equally

• Gain electrons and form negative ions

What happens to the name of a non-metal when it becomes an ion?

• The ending changes to "-ite"

• The ending changes to "-ide"

• The name remains unchanged

• The ending changes to "-ate"

An ionic compound is formed when:

• Two non-metals share electrons

• A metal and non-metal exchange electrons

• Two metals bond together

• Atoms split apart

The overall charge of an ionic compound is:

• Always positive

• Always negative

• Neutral

• Variable depending on temperature

When writing chemical formulas, which comes first?

• The non-metal

• The metal

• The polyatomic ion

• The element with the larger atomic number

How can you determine the charge of a transition metal in a compound?

• By its position on the periodic table

• By the Roman numeral in parentheses

• By its atomic number

• By its atomic mass

What indicates that a compound contains a polyatomic ion?

• It contains only one type of atom

• It contains multiple atoms bonded together with an overall charge

• It contains only transition metals

• It contains only noble gases

The formula for calcium hydroxide is:

• CaOH

• Ca(OH)₂

• CaO₂H

• Ca₂OH