Chemistry Reactions Quiz

The table shows what happened when four different metals A–D were placed into water. Put the reactions into order, from least to most vigorous.

• ABDC

• CDAB

• BACD

• ACDB

A displacement reaction is when...

• A more reactive metal replaces a less reactive metal in a salt

• A reaction bubbles

• A reaction produces a gas

• A less reactive metal replaces a more reactive metal in a salt

What is the result of the displacement reaction: iron + copper sulphate -->

• iron sulphate + copper

• iron copper + sulphate

Which is most reactive out of these elements?

• Sodium

• Zinc

• Carbon

• Iron

In the reactivity series, where are the least reactive metals found?

• in the middle

• at the bottom

• at the top

Carbon can react with copper ore (malachite) to produce pure copper metal. What can you deduce about copper?

• Copper displaces carbon

• Copper is less reactive than carbon

• Copper is more reactive than carbon

• Carbon is a metal

As you go down group 1, describe what happens to the reactivity of metals

• the further down you go, the more reactive the metals are

• the most reactive group 1 metals are at the top

What is an ore?

• A type of carbon

• A precious jewel

• A metal which is found pure in the ground

• A rock which contains enough metal to be economical to extract

What are the end results of this displacement reaction: aluminium + copper sulphate -->

• aluminium copper + sulphate

• aluminium sulphate + copper

Why can aluminium not be displaced by iron?

• because aluminium is less reactive than iron

• because aluminium is more reactive than iron