ellamay947
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A quiz on Chemical Reactions

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ellamay947
Created by ellamay947 over 9 years ago
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Quiz on Chemical Reactions

Question 1 of 8

1

What is the most likely PH when you mix acidic milk and alkali egg white?

Select one or more of the following:

  • pH2

  • pH6

  • pH7

  • pH14

Explanation

Question 2 of 8

1

What is the effect of putting a burning splint in oxygen?

Select one or more of the following:

  • The flame will get bigger.

  • It will make a popping sound.

  • No reaction.

Explanation

Question 3 of 8

1

Give a substance which is almost neutral/ neutral.

Select one or more of the following:

  • Johnson's pH 5.5 face wash.

  • Facial wash with a pH of 7.3

  • Body wash with a pH of 10

Explanation

Question 4 of 8

1

Tick the correct word equation for nitric acid reacting with sodium hydrocarbonate.

Select one or more of the following:

  • sodium hydrocarbonate + nitric acid = carbon monoxide + water +hydrogen

  • sodium hydrocarbonate + nitric acid = carbon dioxide + water + sodium nitrate

Explanation

Question 5 of 8

1

Tick the correct chemical equation for the chemical reaction in the clear blue flame.

Select one or more of the following:

  • methane + flame = fire + oxygen

  • methane + oxygen = carbon dioxide + water

Explanation

Question 6 of 8

1

Tick the correct word equation for magnesium reacting with air.

Select one or more of the following:

  • magnesium + flame = bright light

  • magnesium + nitrogen = magnesium nitrate

  • magnesium + oxygen = magnesium oxide

Explanation

Question 7 of 8

1

In which gas does magnesium immediately go out?

Select one or more of the following:

  • Air

  • Exhaled air

  • Nitrogen

  • Oxygen

Explanation

Question 8 of 8

1

Why does magnesium go out in a jar of exhaled air?

Select one or more of the following:

  • Because oxygen thins the flame.

  • Because carbon dioxide contains nitrogen.

  • Because the air we exhale contains carbon dioxide and carbon dioxide puts out fires.

Explanation

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