Chemistry - Ionic Bonding

Ionic compounds contain ions. The numbers of electrons, neutrons and protons in four particles, W, X, Y and Z, are shown in the figure.State which particle, W, X, Y or Z, is a negative ion.

• W

• X

• Y

• Z

Tags

NGSS.HS-PS1-1

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

• It gains electrons.

• It gains protons.

• It loses electrons.

• It loses protons

The electronic configuration of an ion is 2.8.8.

What could this ion be?

• A

• B

• C

• D

When sodium chloride is formed from its elements, each chlorine atom ……1…… one ……2…….

Which words correctly complete gaps 1 and 2?

• A

• B

• C

• D

Which two elements react together to form an ionic compound?

• W AND X

• X AND Y

• Y AND Z

• Z AND W

The element rubidium, Rb, is immediately below potassium in the Periodic Table.

It reacts with bromine to form the compound rubidium bromide.

Which descriptions of this compound are correct?

• A

• B

• C

• D

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The table contains information about four substances.

Which substance is potassium chloride?

• A

• B

• C

• D

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

Sodium chloride is an ionic solid.

Which statement is not correct?

• Ions are formed when atoms lose or gain electrons

• Ions in sodium chloride are strongly held together

• Ions with the same charge attract each other.

• Sodium chloride solution can conduct electricity.

Q+ is an ion of element Q.

What has the highest value in the ion?

• the nucleon number

• the number of electrons

• the number of neutrons

• the proton number