DA Chem Unit 2 Reactions of Metals

Which metal is the most reactive in the reactivity series?

• Copper (Cu)

• Potassium (K)

• Iron (Fe)

• Zinc (Zn)

What is formed when sodium reacts with water?

• Sodium oxide and hydrogen gas

• Sodium hydroxide and hydrogen gas

• Sodium chloride and oxygen gas

• Sodium carbonate and carbon dioxide

Which metal burns with a lilac flame when heated in air?

• Calcium (Ca)

• Magnesium (Mg)

• Potassium (K)

• Aluminium (Al)

What is the colour of copper(II) oxide?

• White

• Yellow

• Black

• Red

Which gas is produced when metals react with steam?

• Oxygen

• Carbon dioxide

• Hydrogen

• Nitrogen

What happens to freshly cut sodium when exposed to air?

• It remains shiny

• It tarnishes rapidly

• It melts

• It explodes

Which metal is extracted by electrolysis due to its high reactivity?

• Iron (Fe)

• Copper (Cu)

• Aluminium (Al)

• Zinc (Zn)

What is the balanced equation for the reaction of magnesium with oxygen?

Which metal reacts vigorously with water, producing a lilac flame?

• Calcium (Ca)

• Sodium (Na)

• Potassium (K)

• Magnesium (Mg)

What is the product when iron reacts with steam?

• Iron hydroxide

• Iron oxide

• Iron chloride

• Iron sulphate