Reactivity of Metals Quiz

What is reduction?

• The gaining of oxygen

• The removal of oxygen

• Another term to describe combustion

• A decrease in mass

What is being oxidised in the reaction below?

zinc + copper oxide --> zinc oxide + copper

• zinc

• copper oxide

• zinc oxide

• copper

Which of these features in ALL chemical reactions?

• Temperature increases

• Bubbles are seen

• A new substance is formed

• There is a colour change

What is meant by an independent variable?

• The variable that is changed in an investigation

• The variable that is recorded in an investigation

• Variables that are kept the same in an investigation

A student changed the concentration of acid reacted with 0.2g of zinc and timed how long it took the reaction to finish. Which is the dependant variable in this reaction?

• The concentration of acid

• The mass of zinc

• The type of metal used

• The time taken for the reaction to finish

What is the correct general equation for the reaction of metals and acids?

• metal + acid --> salt + hydrogen

• metal + acid --> salt + water

• metal + acid --> salt

• metal + acid --> salt + oxygen

Is aluminium more or less reactive than iron?

• More reactive

• Less reactive

Draw the electron configuration for sodium

Answer explanation

Sodium is more reactive than lithium. Explain why in terms of electronic structure. (3 marks)

Answer explanation

Because in sodium, the outer shell electron is further away from the nucleus. Therefore, the outer shell electron is less strongly attracted to the nucleus and so the outer shell electron is more easily lost.