Ionic and Covalent Compounds

Nonmetals tend to

• gain electrons

• lose electrons

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

If I gain electrons I become

• Positive because I've added to my atom
• negative because I've added electrons
• same because i'm balanced
• equal because now I have electrons

Two atoms form a compound by the attraction between positive and negative charges.

• covalent compound

• ionic compound

• polymer

• organic compound

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NGSS.HS-PS1-3

True or False: An ionic bond forms when atoms of a non-metal give up electrons to atoms of a metal

• True

• False

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

In all covalent bonds, valence electrons are

• lost

• gained

• shared equally

• shared

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NGSS.HS-PS1-1

Which two elements would NOT form an ionic bond?

• calcium and lithium

• calcium and oxygen

• lithium and oxygen

• calcium and carbon

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NGSS.HS-PS1-3

What type of compound is formed when atoms share electrons to have a complete octet?

• hydrocarbon

• covalent compound

• ionic compound

• inorganic compound

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NGSS.HS-PS1-1

What is the chemical formula for the ionic compound formed between magnesium and oxygen?

• MnO

• Mg₂O

• MgO

• MnO₂

What is the chemical formula for sodium nitride?

• Na₃N

• NaN₃

• SN₃

• S₃N

An example of a covalent compound is

• sodium floride

• calcium chloride

• carbon dioxide

• all of the above

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NGSS.MS-PS1-1