Section 04 Quizizz

What is formed when metals react with oxygen?

• Metal oxides

• Metal chlorides

• Metal sulfates

• Metal nitrates

The term for the gain of oxygen in a reaction is (a)  

• Oxidation
• Reduction
• Neutralization
• Precipitation

What does reduction involve in terms of oxygen?

• Loss of oxygen

• Gain of oxygen

• No change in oxygen

• Exchange of oxygen

What is the loss of electrons called?

• Oxidation

• Reduction

• Ionization

• Sublimation

Match the following processes with their results.

• Evaporating salt

• Gaseous salt

• Crystallising a salt solution

• Dissolved salt

• Melting salt

• Solid salt

• Dissolving salt in water

• Liquid salt

Which of the following is an example of a weak acid?

• Hydrochloric acid

• Nitric acid

• Ethanoic acid

• Sulfuric acid

What is produced at the cathode during the electrolysis of lead bromide?

• Bromine

• Lead

• Oxygen

• Hydrogen

What is produced at the anode during the electrolysis of lead bromide?

• Lead

• Bromine

• Chlorine

• Oxygen

(a)   is produced at the positive electrode (anode) unless the solution contains halide ions.

• Hydrogen
• Oxygen
• Chlorine
• Nitrogen

Match the following ions with their behavior during electrolysis.

• Ions that move towards the cathode

• Negatively charged ions

• Ions that lose electrons at the anode

• Cations

• Ions that do not participate in electrolysis

• Neutral ions

• Ions that are positively charged

• Positively charged ions