Pattern of reactivity

Another term for burning is

• Fire triangle
• Magnesium oxide
• Combustion
• Bustion

Which of the following is the product of the reaction of aluminium and oxygen?

• aluminium oxide.
• metal oxide
• aluminium ore
• aluminium and oxygen

What happens when the iron is heated?

• develop black powder without glowing

• glows and produce yellow sparks and black powder

• burst into flames and white powder forms

• do not have any reaction

Which of the following metals are suitable in the reaction with steam?

• Sodium

• Copper

• Magnesium

• Iron

What is produced when magnesium reacts with water?

• Copper hydroxide
• Magnesium oxide
• Magnesium chloride

• Magnesium hydroxide

What gas is always produced when a metal reacts with water?

• Oxygen
• Carbon dioxide
• Hydrogen
• Carbon monoxide

Arrange the steps below in order to see the reaction of calcium and cold water.

            P - bubbles will be produced and water become cloudy

            Q - put the lighten splint at the mouth of the tube and heard the pop sound

            R - calcium sinks in the cold water

            S - collect gas by placing a test tube filled with water over the fizzing metal

• P > Q > R > S

• Q > P > S > R

• R > P > S > Q

• R > S > P > Q

Ahmad wants to investigate the reaction of metal with acid. Which of the following do you think is the best combination for the reaction?

• Potassium and concentrated hydrochloric acid

• Magnesium and dilute hydrochloric acid

• Gold and concentrated hydrochloric acid

• Copper and dilute hydrochloric acid

What happens when iron reacts with dilute hydrochloric acid?

• Iron chloride + water

• Iron chloride + hydrogen

• Iron hydroxide + hydrogen

• Iron oxide

Iron nail was placed in a copper sulfate solution.

What will happen in the reaction?

• Copper will dissolve and form a pale blue solution

• Iron will dissolve and form iron sulfate solution

• Both iron and copper will react in the solution

• No reaction will occurred in the solution