Page 113 - Innovator's Science-8

2. The individual substances in the mixture are called compounds.
3. Stainless steel contains iron, nickel, chromium, and a small amount of carbon.

4. Nitrogen makes up about 78% of air and support burning.
5. Air is a mixture of different gases that supports life.

D. Short answer type questions. Decision-making Skills
1. What is matter?

2. What type of change does not form a new substance?
3. What are metals and non-metals?
4. What is the main difference between physical and chemical change?
5. Why is air considered a mixture and hot a compound?

E. Long answer type questions. Critical Thinking Skills

1. What are pure substances?
2. Differentiate between elements and compounds.
3. Explain with examples how compounds differ from mixtures.
4. Discuss the importance and applications of elements, compounds, and mixtures in our daily lives.

5. Explain, how water is a compound. Describe an activity to prove it.

Project Ideas Exploration

1. To prepare a mixture and a compound using iron filings and sulpher powder, and to dis nguish
between them based on their physical proper es and behaviour.

2. Each group will pretend to be in the role of either an element, a compound, or a mixture. Debate
which category among them is the most important.

Life Skills Inference

• To help students iden fy and classify everyday substances as elements, compounds, or mixtures
and understand their proper es through a hands-on sor ng and observa on ac vity.

Enhance your Life Skills Mental Development
• Can You Separate This Mixture?
• Provide a small container of salt and sand.
• Challenge students to separate them using water and filtra on.

• Which part dissolved? Which stayed behind?

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Science-8