Chem CP Ionic Compounds

The halogens (F, Cl, Br, I) have how many electrons in their outer shell?

• 1

• 2

• 6

• 7

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The group number tells you what about an element?

• The number of electron shells

• The total number of electrons in the atom

• The number of electrons in the outer shell

• The maximum number of electrons in each shell

Tags

NGSS.HS-PS1-1

When non-metals react to form ionic bonds they ________ electrons

• lose

• gain

• share

• all of the above

What force holds the oppositely charged ions together in a solid?

• Electrostatic

• Magnetic

• Gravity

• None of the above

Tags

NGSS.HS-PS1-3

NGSS.HS-PS2-4

What is the ionic compound formed between K and F?

• KF
• K₂F
• KF₂
• K₂F₂

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

• There are 2 bromide ions for every magnesium ion
• Bromide has a 2- charge
• Bromide has a 2+ charge
• There are 2 magnesium ions to every bromide ion

Write the formula when Al and O bond?

• Al₃O₂
• AlO
• Al₂O₃
• O₂Al₃

Tags

NGSS.HS-PS1-2

Write the formula when S and K bond?

• SK
• KS
• K₂S
• S2K

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

• positive ion
• negative ion
• subscript
• the female

Which of the following is a characteristic property of ionic compounds?

• They form hard, brittle crystals with characteristic shapes
• They have low melting points
• They have low boiling points
• They contain no charged particles

Tags

NGSS.HS-PS1-3