Page 65 - York Global Science 6 - Physical Science

Physical Science

Reflect on Your Learning

1 What is the boiling point and the freezing point of water? What
happens at these temperatures?

2 Why are physical changes often reversible?
3 What happens to the particles in a substance when there is a

chemical change?
4 What does a hydrologist do?

Skills Progression

Question
Skill
Describe how substances can
Knowledge
change state. Explain what
happens to the particles.

Question Skill

Explain how evaporation Comprehension
can happen without boiling.

Question
Skill Use knowledge of separation techniques

Application to explain how to separate a mixture
of sugar and water. How can you keep

both the solute and the solvent?

Question
Skill
Explain why cooking eggs Analysis
is an irreversible change.

Skill Question

Synthesis Draw a particle diagram to explain how physical
changes and chemical changes are different.

Question
Skill
How does knowledge of the way particles behave
help us to understand the changes in substances? Evaluation

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