Science 1prep 2nd term test on L3: chemical equation and reactions

Science 1prep 2nd term revision on U1: L3: chemical equation and reactions

1 / 10

Put true or false
The chemical equation sholuld be balanced

True

False

2 / 10

Put true or false
On burning a magnesium strip, black powder is formed

Ture

False

3 / 10

Put true or false
Burning reactions causes pollution of environment

True

False

4 / 10

Put true or false
Ammonia reacts with hydrochloric acid forming white clouds

Ture

False

5 / 10

Put true or false
Carbon dioxide gas acts as a greenhouse effect gas

True

False

6 / 10

Choose:
Which of the following causes corrosion of building?
a. b. c. .

sulphur dioxide

carbon dioxide

Nitrogen oxide

7 / 10

Choose:
Which of the following gases is produced during lightening?

sulphur dioxide

carbon dioxide

Nitrogen oxide

8 / 10

Choose:
increasing the ratio of ................. gas in air causes increasing of temperature.

sulphur dioxide

carbon dioxide

Nitrogen oxide

9 / 10

Choose:
The sum of reactants masses is ................. the masses of products.

less than

equal to

more than

10 / 10

Choose:
All of these gases are acidic, except ..............

sulphur dioxide

carbon dioxide

ammonia

نتيجتك هي