2772744
Description
Quiz by ellamay947, updated more than 1 year ago
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Created by ellamay947
over 9 years ago
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Question 1
Question
What is the most likely PH when you mix acidic milk and alkali egg white?
Answer
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pH2
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pH6
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pH7
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pH14
Question 2
Question
What is the effect of putting a burning splint in oxygen?
Answer
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The flame will get bigger.
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It will make a popping sound.
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No reaction.
Question 3
Question
Give a substance which is almost neutral/ neutral.
Answer
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Johnson's pH 5.5 face wash.
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Facial wash with a pH of 7.3
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Body wash with a pH of 10
Question 4
Question
Tick the correct word equation for nitric acid reacting with sodium hydrocarbonate.
Answer
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sodium hydrocarbonate + nitric acid = carbon monoxide + water +hydrogen
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sodium hydrocarbonate + nitric acid = carbon dioxide + water + sodium nitrate
Question 5
Question
Tick the correct chemical equation for the chemical reaction in the clear blue flame.
Answer
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methane + flame = fire + oxygen
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methane + oxygen = carbon dioxide + water
Question 6
Question
Tick the correct word equation for magnesium reacting with air.
Answer
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magnesium + flame = bright light
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magnesium + nitrogen = magnesium nitrate
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magnesium + oxygen = magnesium oxide
Question 7
Question
In which gas does magnesium immediately go out?
Answer
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Air
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Exhaled air
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Nitrogen
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Oxygen
Question 8
Question
Why does magnesium go out in a jar of exhaled air?
Answer
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Because oxygen thins the flame.
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Because carbon dioxide contains nitrogen.
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Because the air we exhale contains carbon dioxide and carbon dioxide puts out fires.
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