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Biblioteka

9.1 Physical and Chemical Changes

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Posljednje ažuriranje about 6 years ago
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Pitanje 1
1.

Write your full name.

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Pitanje 2
2.

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

Pitanje 3
3.

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

Pitanje 4
4.

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

Pitanje 5
5.

Respiration is a chemical reaction. (You can refer to p. 46 coursebook)

What are the reactants in the respiration reaction?

Pitanje 6
6.

Respiration is a chemical reaction. (You can refer to p. 46 coursebook)

What are the products in the respiration reaction?

Pitanje 7
7.

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