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  1. Problems
  2. /Acids, Bases and Salts
  3. /Acids and Bases

Acids and Bases

Chemistry
+ Upload a Problem
More in Acids, Bases and SaltsAcids and BasesSalts and Their UsespH and Neutralisation
14 problems
Type:
1.
How many antacid tablets, each with 0.50 g of magnesium hydroxide, are needed to neutralise 250 mL…
High School (9–10), General · pH and Neutralisation, Acids and BasesStemPy LabStemPy Lab
Medium
2.
A bee sting has methanoic acid. What would you rub on it, and why?
High School (9–10), General · pH and Neutralisation, Acids and BasesStemPy LabStemPy Lab
Easy
3.
Explain how tooth decay begins, and why brushing with toothpaste helps.
High School (9–10), General · pH and Neutralisation, Acids and BasesStemPy LabStemPy Lab
Medium
4.
Write the equation for the neutralisation of stomach acid by magnesium hydroxide.
High School (9–10), General · pH and Neutralisation, Acids and BasesStemPy LabStemPy Lab
Medium
5.
Methane, CH₄, and ammonia, NH₃, both contain hydrogen.
High School (9–10), General · Acids and BasesStemPy LabStemPy Lab
Hard
6.
Why must we always add a concentrated acid to water, slowly and with stirring, and never water to…
High School (9–10), General · Acids and BasesStemPy LabStemPy Lab
Easy
7.
25 mL of 0.02 M hydrochloric acid is made up to 500 mL with water.
High School (9–10), General · Acids and BasesStemPy LabStemPy Lab
Medium
8.
Dry hydrogen chloride gas does not change dry blue litmus paper, but it turns damp blue litmus red.
High School (9–10), General · Acids and BasesStemPy LabStemPy Lab
Medium
9.
Carbon dioxide is passed through lime water for a short time, and it turns milky.
High School (9–10), General · Acids and BasesStemPy LabStemPy Lab
Medium
10.
A white solid is added to dilute hydrochloric acid, and a gas comes out that turns lime water milky.
High School (9–10), General · Acids and BasesStemPy LabStemPy Lab
Medium
11.
Write the balanced equation for each. Magnesium with dilute hydrochloric acid.
High School (9–10), General · Acids and BasesStemPy LabStemPy Lab
Medium
12.
A student puts some chopped onion in two test tubes.
High School (9–10), General · Acids and BasesStemPy LabStemPy Lab
Medium
13.
You have a clear, colourless liquid. How can you find out safely whether it is an acid, a base or…
High School (9–10), General · Acids and BasesStemPy LabStemPy Lab
Easy
14.
Name the colour that you see in each case.
High School (9–10), General · Acids and BasesStemPy LabStemPy Lab
Easy