2772744
Descrição
Quiz por ellamay947, atualizado more than 1 year ago
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Criado por ellamay947
mais de 9 anos atrás
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Questão 1
Questão
What is the most likely PH when you mix acidic milk and alkali egg white?
Responda
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pH2
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pH6
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pH7
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pH14
Questão 2
Questão
What is the effect of putting a burning splint in oxygen?
Responda
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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.
Questão 3
Questão
Give a substance which is almost neutral/ neutral.
Responda
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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
Questão 4
Questão
Tick the correct word equation for nitric acid reacting with sodium hydrocarbonate.
Responda
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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
Questão 5
Questão
Tick the correct chemical equation for the chemical reaction in the clear blue flame.
Responda
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methane + flame = fire + oxygen
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methane + oxygen = carbon dioxide + water
Questão 6
Questão
Tick the correct word equation for magnesium reacting with air.
Responda
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magnesium + flame = bright light
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magnesium + nitrogen = magnesium nitrate
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magnesium + oxygen = magnesium oxide
Questão 7
Questão
In which gas does magnesium immediately go out?
Responda
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Air
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Exhaled air
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Nitrogen
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Oxygen
Questão 8
Questão
Why does magnesium go out in a jar of exhaled air?
Responda
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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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