Acids and Bases: Grade 7 Quiz

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ACID and BASE basics

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Abegail Atienza

Philippines

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Acids and Bases: Grade 7 Quiz


Acids and Bases: Grade 7 QuizVersion en ligne ACID and BASE basics par Abegail Atienza 1 What is a defining feature of an acid in the pH scale? a Acids turn blue litmus paper red b Acids feel soapy to touch c Acids have a pH less than 7 d Acids have a pH greater than 7 2 Which instrument is used to test whether a solution is acidic or basic? a Thermometer b Litmus paper c Barometer d Telescope 3 What is a base commonly found in households? a Hydrochloric acid b Soap c Lemon juice d Vinegar 4 What happens to red litmus paper in a basic solution? a It stays blue or turns blue b It disappears c It turns red d It turns purple 5 Which of the following is an example of an acid? a Citric acid in citrus fruits b Ammonia solution c Baking soda solution d Soapy water 6 Which of the following is an example of a base? a Vinegar b Ammonia solution c Hydrochloric acid d Lemon juice 7 What is neutralization? a A base evaporates b A metal dissolves c A gas is released d An acid reacts with a base to form a salt and water 8 Which statement correctly describes pH 7? a It is acidic b It is basic c It is highly acidic d It is neutral 9 If a solution turns blue litmus paper red, what can you conclude? a The solution is basic b The solution is acidic c The solution is a salt solution d The solution is neutral 10 What safety practice should you follow when handling acids and bases? a Wear goggles and gloves b Mix with bare hands c Taste to check strength d Ignore spills if small Feedback 1 acids have pH < 7 and turn red litmus red. 2 Litmus paper changes color in acidic or basic solutions. 3 Soap acts as a basic substance; vinegar and lemon juice are acids. 4 Bases turn red litmus blue; blue litmus remains blue or turns blue. 5 Citrus fruits contain citric acid, a common acid. 6 Ammonia is a common base; vinegar/lemon juice are acids. 7 Neutralization combines acid and base producing salt and water. 8 pH 7 is neither acidic nor basic. 9 Acids turn blue litmus red; red litmus stays red. 10 Always use proper PPE and handle with care.

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Acids and Bases: Grade 7 Quiz

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À propos de cette activité

Créé par

Téléchargez la version pour jouer sur papier

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Acids and Bases: Grade 7 QuizVersion en ligne

par Abegail Atienza

What is a defining feature of an acid in the pH scale?

Which instrument is used to test whether a solution is acidic or basic?

What is a base commonly found in households?

What happens to red litmus paper in a basic solution?

Which of the following is an example of an acid?

Which of the following is an example of a base?

What is neutralization?

Which statement correctly describes pH 7?

If a solution turns blue litmus paper red, what can you conclude?

What safety practice should you follow when handling acids and bases?

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