10 AQA chemical changes

In the term OILRIG, what is meant if a substance is oxidised?

• An atom gain electrons

• An atom loses electrons

• An atom gains neutrons

• An atom loses neutrons

In a displacement reaction it is the ____________ reactive metal that is displaced from a compound?

• Least

• Most

• Shiniest

• Heaviest

In the following chemical reaction what will the products be?

Copper Sulfate + Iron -->

• Copper Sulfide + Iron

• Iron Sulfide + Copper

• Iron Sulfate + Copper

• Copper Sulfate + Iron

What is the correct charge on a Magnesium ion

• Mg²⁺

• Mg^2-

• Mg⁺

• Mg^-

Which of the following ions is produced when acids dissolve in water?

• H⁺

• H^-

• OH⁺

• OH^-

Which of the following is the best definition of a strong acid?

• An acid that fully dissociates into its ions.

• An acid the partially dissociates into its ions.

• An acid that does not dissociate into ions.

Which of the following is the best definition for a weak acid?

• An acid that fully dissociates into its ions.

• An acid that partially dissociates into its ions.

• An acid that does not dissociate into its ions.

How can we extract metals that are higher than Carbon in the reactivity series?

• Reduction reaction

• Electrolysis

• Phytomining

• Bioleaching

Which of the following is the best statement to describe what happens to ions during electrolysis?

• Positive Cations will move to the Negative Cathode.

• Positive Cations will move to the Positive Cathode.

• Negative Cations will move to the positive Cathode

• Negative Cations will move the negative Cathode

During the electrolysis of Brine Water (NaCl_(aq)) what product will be formed at the cathode?

• Na_(s)

• Cl_2(g)

• H_2(g)

• O_2(g)