Unit 1 Acids And Bases

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

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Front (Question)

Indicators

Back (Answer)

Chemical that change colour at different pH levels

Front (Question)

What ions are contains in acids

Back (Answer)

H+ ions

Front (Question)

What ions are contained in alkalis

Back (Answer)

OH- ions

Front (Question)

What ions are contains in neutral

Back (Answer)

Both H+ and OH- ions

Front (Question)

What pH is acidic solutions

Back (Answer)

Less then pH 7

Front (Question)

What pH is alkaline solutions

Back (Answer)

Greater than pH 7

Front (Question)

What solution is this equation for: [H+]>[OH-]

Back (Answer)

Acidic solutons

Front (Question)

How would you word this equation: [H+]>[OH-]

Back (Answer)

The concentration of hydrogen ions is greater than the concentration of hydroxide ions

Front (Question)

What solution is this equation for: [H+]<[OH-]

Back (Answer)

Alkaline solutions

#10

Front (Question)

How would you word this equation: [H+]<[OH-]

Back (Answer)

The concentration of hydroxide ions is greater than the concentration of hydrogen ions

#11

Front (Question)

What is a concentration of H+ and OH- ions and water or a neutral solution?

Back (Answer)

Number of hydrogen ions = number of hydroxide ions.

#12

Front (Question)

Do acid and alkali solutions have more H +/OH- ions than pure water?

Back (Answer)

Acids have more H+ ions than water whereas alkalis have more OH- ions than water

#13

Front (Question)

Can you explain what is a reversible reaction?

Back (Answer)

There is a reversible reaction- the reaction goes forward and backwards. The rate of the forward reaction = rate of the back reaction at equilibrium.

#14

Front (Question)

Which ion is common to all acids?

Back (Answer)

H+ ions

#15

Front (Question)

What happens when an acid is diluted?

Back (Answer)

When diluted with water, the concentration of H+ ions decreases and the pH moves towards 7, but never goes above 7

#16

Front (Question)

What happens when alkalis are diluted?

Back (Answer)

When diluted with water, the concentration of OH- ions decreases and the pH moves towards 7 but never goes below 7

#17

Front (Question)

What are the two stages to forming an acid?

Back (Answer)

Step 1: a non-metal is burned, forming a non-metal oxide Step 2: the non-metal oxide dissolves in water

#18

Front (Question)

What are the two stages of forming an alkali?

Back (Answer)

Stage 1: a metal is burned, forming a metal oxide Stage 2: if soluble, the metal oxide dissolves in water to form the metal hydroxide

#19

Front (Question)

What are metal oxide called if they do not dissolve in water?

Back (Answer)

They are called bases

#20

Front (Question)

What is a base?

Back (Answer)

A substance which reacts with an acid and neutralise it, giving water as the product

#21

Front (Question)

What happens to metals and nonmetal oxides that do not dissolve in water?

Back (Answer)

Water will not alter the pH

#22

Front (Question)

What happens to metals below hydrogen on the ECS

Back (Answer)

They will not react with acids

#23

Front (Question)

What is the test for hydrogen?

Back (Answer)

And lIT splint into a test strip of hydrogen will burn it with a pop

#24

Front (Question)

When did neutralisation reactions occur?

Back (Answer)

Neutralisation reactions occur when an acid is neutralised by a base resulting in a neutral solution