Science Questions on Changes and Reversibility

What happens when you mix vinegar and baking soda? Is the change reversible or irreversible?

Can you separate sand from water after mixing them? Explain how to do it and is this change reversible or irreversible?

Which materials dissolve in water? (there may be more than one correct answer)

• Sugar

• Oil

• Salt

• Sand

What happens to sugar when you add it to water? Can you get the sugar back?

Give the names that match the following changes of state​.

Liquid to Solid ​ (a)   ​

Liquid to Gas ​ (b)   ​

Gas to Liquid ​ (c)   ​

Solid to Liquid ​ (d)   ​

• Freezing
• Evaporation
• Condensation
• Melting
• Sublimation
• Aerating
• Deposition

What happens to chocolate when you heat it and cool it down? Is this change reversible or irreversible?

When you burn wood, can you get the wood back? Why is this an irreversible change?

What happens to water when it evaporates? Can it turn back into liquid water? How

Give an example of a situation where a material undergoes both a reversible and an irreversible change.

What happens to steam when it cools down? Is this a reversible change?