Chemistry Video Tutorial Quiz

What happens to magnesium in the oxidation process?

• It loses electrons.

• It gains electrons.

• It remains unchanged.

• It forms a gas.

What is a spectator ion?

• An ion that remains aqueous and does not participate in the reaction.

• An ion that forms a precipitate.

• An ion that participates in the reaction.

• An ion that changes state during the reaction.

Why is silver considered more stable than magnesium?

• Because it forms more compounds.

• Because it has been known since antiquity.

• Because it is more reactive.

• Because it is heavier.

Which of the following metals was not isolated until a few hundred years ago?

• Silver

• Gold

• Magnesium

• Copper

What is the main goal of the lab experiment described?

• To measure the weight of metals.

• To observe the reactivity of different metals.

• To test the conductivity of metals.

• To create new compounds.

What should be done to the metal samples before placing them in the test tubes?

• Dissolve them in water.

• Sand them to remove any oxide layer.

• Heat them.

• Weigh them.

How should the metal samples be arranged in the test tubes?

• By reactivity.

• By weight.

• By atomic number or alphabetically.

• By color.

What is the purpose of adding copper(II) sulphate to the test tubes?

• To increase the temperature.

• To change the color of the solution.

• To observe the reaction with the metal samples.

• To dissolve the metals.

What observation indicates a chemical change during the experiment?

• Decrease in volume.

• Increase in temperature.

• Formation of bubbles.

• No change in color.

Which metal was observed to be the most reactive during the experiment?

• Tin

• Magnesium

• Iron

• Lead