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9.1 Physical and Chemical Changes

Last updated almost 6 years ago

7 questions

0

Question 1

1.

Write your full name.

1

1

2

1

1

1

Question 2

2.

Imagine that you break a a glass cup. Has a new substance been formed?

Yes

No

Question 3

3.

Breaking a glass cup is a ......

physical change

chemical change

Question 4

4.

In the reaction between iron and sulfur reactants are............................ and the products are.................

reactants are iron and sulfide

reactants are iron and sulfur 

products are iron and sulfur

products are iron sulfide

Question 5

5.

Respiration is a chemical reaction. (You can refer to p. 46 coursebook)
What are the reactants in the respiration reaction?

oxygen and water

carbon dioxide and water 

oxygen and glucose

glucose and water

Question 6

6.

Respiration is a chemical reaction. (You can refer to p. 46 coursebook)
What are the products in the respiration reaction?

oxygen and water

carbon dioxide and water 

oxygen and glucose

glucose and water

Question 7

7.

Can you name a chemical reaction that happens in plants but not in animals?