Are there some changes we can't reverse?

Science

Freezing is an irreversible change. True or false?

Baking a cake is an irreversible change. True or false?

Burning is a reversible change. True or false?

We learned three main ways to separate mixtures. They were separating by hand, separating by magnetism and __________.

Which method would you use to separate beads of different colours?

Which method would you use to separate sand from gravel?

Which method would you use to separate small pieces of metal from sand?