G8_Chem_Chemical Bonding_Worksheet

Potassium, K, forms a compound with fluorine, F. Which statements about this compound are correct?

1.The compound is ionic.

2. The formula of the compound is KF.

3. The compound is soluble in water.

• A. 1, 2 and 3

• B. 1 and 2 only

• C. 1 and 3 only

• D. 2 and 3 only

Sodium chloride is an ionic solid. Which statement is not correct?

• A. Ions are formed when atoms lose or gain electrons.

• B. Ions in sodium chloride are strongly held together.

• C. Ions with the same charge attract each other.

• D. Sodium chloride solution can conduct electricity.

Element X is in Group I of the Periodic Table.

X reacts with element Y to form an ionic compound.

Which equation shows the process that takes place when X forms ions?

• A. X + e → X+

• B. X – e → X

• C. X + e → X

• D. X – e → X+

Which change to an atom occurs when it forms a positive ion?

• A. It gains electrons.

• B. It gains protons.

• C. It loses electrons.

• D. It loses protons.

Rubidium is in Group I of the Periodic Table and bromine is in Group VII.

Rubidium reacts with bromine to form an ionic compound.

Which row shows the electron change taking place for rubidium and the correct formula of the rubidium ion?

• A

• B

• C

• D

Two elements, represented by and , form a compound. Which diagram shows molecules of the compound?

• A

• B

• C

• D

The electronic structures of atoms P and Q are shown.

P and Q react to form an ionic compound.

What is the formula of the compound?

• A. Q7P

• B. QP

• C. QP3

• D. QP7

The table shows the electronic structures of four atoms.

Which two atoms conine to form an ionic compound?

• W and X

• W and Y

• X and Y

• X and z

The table shows the electronic structures of four atoms.

Which two atoms conine to form an ionic compound?

• W and X

• W and Y

• Y and Z

• Z and W

The electronic configuration of an ion is 2.8.8.

What could this ion be?

• A

• B

• C

• D