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Test: Acids, Bases and Salts - Year 11 MCQ


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10 Questions MCQ Test Chemistry for GCSE/IGCSE - Test: Acids, Bases and Salts

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Test: Acids, Bases and Salts - Question 1

What is an acid?

Detailed Solution for Test: Acids, Bases and Salts - Question 1

The H+ ion is simply an H atom with a missing electron i.e. a proton

Test: Acids, Bases and Salts - Question 2

What is an alkali?

Detailed Solution for Test: Acids, Bases and Salts - Question 2

A base will neutralise an acid, but is only called an alkali when it is dissolved in water

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Test: Acids, Bases and Salts - Question 3

A substance with a pH of 6 is...

Detailed Solution for Test: Acids, Bases and Salts - Question 3
pH values of less than 7 are acidic, 7 is neutral and values greater than 7 are alkaline
Test: Acids, Bases and Salts - Question 4
Pick the correct equation for the reaction between hydrochloric acid and iron oxide.
Detailed Solution for Test: Acids, Bases and Salts - Question 4
This is an example of an acid-base reaction. An alkali is a base that dissolves in water
Test: Acids, Bases and Salts - Question 5
We can react an acid and an alkali together to produce a salt. The correct name for this type of chemical reaction is...
Detailed Solution for Test: Acids, Bases and Salts - Question 5
It is called neutralisation because the products of the reaction are neutral
Test: Acids, Bases and Salts - Question 6
When an acid and an alkali react, a salt and water are formed. Pick the correct salt produced when ammonium hydroxide reacts with nitric acid.
Detailed Solution for Test: Acids, Bases and Salts - Question 6
Ammonium nitrate is commonly used as a fertiliser, although it is also explosive when mixed with other chemicals. It was used in the terrorist bomb that killed 169 people in Oklahoma City in 1995
Test: Acids, Bases and Salts - Question 7

Which substance turns red litmus paper blue? 

Detailed Solution for Test: Acids, Bases and Salts - Question 7

Bases turn red litmus paper blue, indicating their alkaline nature due to the presence of hydroxide ions (OH⁻) that react with the litmus dye.

Test: Acids, Bases and Salts - Question 8

What is the chemical formula for hydrochloric acid? 

Detailed Solution for Test: Acids, Bases and Salts - Question 8

Hydrochloric acid has the chemical formula HCl, indicating it is composed of hydrogen and chlorine atoms.

Test: Acids, Bases and Salts - Question 9

Pick the correct combination of definitions.

Detailed Solution for Test: Acids, Bases and Salts - Question 9

An acid is a proton donor because it forms hydrogen ions and, as mentioned in the first question, a hydrogen ion is in fact simply a proton

Test: Acids, Bases and Salts - Question 10

Which substance is used to neutralize acids in the stomach?

Detailed Solution for Test: Acids, Bases and Salts - Question 10

Antacids are substances used to neutralize excess stomach acid, providing relief from conditions like heartburn.

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