G8 23-24 SCI-U1-SUMMATIVE Criterion A (i, ii, iii)

What is a physical change in chemistry?

1. Give an example of a physical change that you observe in your daily life and explain why it is a physical change.

1. What is a chemical change in chemistry?

1. Provide an example of a chemical change that you encounter regularly.

1. How can you differentiate between a physical change and a chemical change?

In a chemical change, a substance will...

• remain unchanged
• turn into a solid
• react

• evaporate into a gas

Which of the following is a example of physical change ?

• Melting of ice
• Mixing salt in water
• Burning paper
• Boiling water

What happens to a substance in a chemical change?

• It remains unchanged

• It turns into a solid

• It reacts

• It evaporates into a gas

Which of the following represents a physical change?

• Freezing of water

• Mixing sugar in water

• Burning wood

• Condensation of steam

During a chemical change, what does a substance do?

• It stays the same

• It becomes a liquid

• It undergoes a reaction

• It turns into a gas