4.15 POGIL Names and Formulas Ionic

Look at the first ionic compound in Model 1. What is the chemical formula for sodium chloride?

• NaCl₃

• NaCl₂

• NaCl

• Na₂Cl

What is the charge of a sodium ion?

• +1

• 0

• -1

• +2

How many sodium ions are there in the sodium chloride sample shown?

• 1

• 9

• 6

• 3

What is the charge of a chloride ion?

• 0

• +1

• -2

• -1

How many chloride ions are there in the sodium chloride sample shown?

• 9

• 3

• 12

• 6

What is the ratio of sodium ions to chloride ions in sodium chloride? Remember ratios are expressed in the lowest whole number.

• 3:1

• 2:1

• 1:2

• 1:1

What must be true of the total (net) charge for any sample of sodium chloride?

• It is positive

• It is neutral

• It is negative

• It is variable

What is the charge of a calcium ion?

• +1

• -2

• +2

• 0

What is the charge of a chloride ion?

• -2

• -1

• +1

• +2

What is the chemical formula for calcium chloride?

• CaCl

• Ca₂Cl

• CaCl₃

• CaCl₂