Chapter 3 Atoms & Bonding

What type of charge does a proton have?

• Positive

• Negative

• No charge

• Even Charge

What type of charge does a electron have?

• Positive

• Negative

• No Charge

• Equal Charge

What type of charge does a neutron have?

• Positive

• Negative

• No Charge

• Equal Charge

Which is a property shared by most molecular compounds?

• High Boiling Point

• High Melting Point

• Low Melting Point

• Nonpolar Bonds

When an atom loses an electron, it becomes a

• Positive ion

• Negative ion

• Neutral ion

• Neutral atom

Magnesium bromide is an ionic compound with the chemical formula MgBr2. What does the “2” tell you?

• Bromide has a 2- charge

• There are two magnesium ions to every bromide ion

• There are two bromide ions for every magnesium ion

• Bromide has a 2+ charge

In the chemical formula for an ionic compound, which item is written first?

• the name of the positive ion

• the name of the negative ion

• the subscripts

• the charges

The chemical name for the compound with the formula Na2S is

• sodium fluoride

• magnesium sulfide

• lithium oxide

• sodium sulfide

What is a double bond?

• a bond between two atoms

• one pair of electrons shared between two atoms

• two pairs of electrons shared between two atoms

• two pairs of electrons shared between four atoms

Electrons involved in bonding between atoms are

• valence electrons

• inside the nucleus

• closest to the nucleus

• positively charged