Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

GCSE Chemistry > Unit 2: 5.1 - Salts > Flashcards

Unit 2: 5.1 - Salts Flashcards

You may prefer our related Brainscape-certified flashcards:
GCSE Geography - AQA flashcards AP® Chemistry flashcards GCSE Religious Studies - Edexcel Route B flashcards GCSE Religious Studies - Eduqas Route A flashcards GCSE Religious Studies - Edexcel Route A flashcards GCSE Religious Studies - Eduqas Route B flashcards Periodic Table flashcards Chemistry 101 flashcards Organic Chemistry 101 flashcards
0
Q

What do you make when you dissolve a substance in water?

A

An aqueous solution.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
1
Q

What is an acid?

A

Acids are substance produce hydrogen ions (H+) when they are added to water.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What pH is an acidic solution?

A

Less than 7.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the state symbol for an aqueous solution?

A

(aq)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is an alkali?

A

A base that dissolves in water to make an alkaline solution.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is a base?

A

A base can react with an acid to neutralise it.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Give 2 features of an alkaline solution.

A

They produce hydroxide (OH-) ions and have pH values greater than 7.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the pH scale?

A

It has values from 0-14. Solutions that are very acidic have a very low pH of between 0 and 2. Strong alkali solutions have a high pH of between 12 and 14. Acids < 7, Alkali > 7

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is an indicator?

A

An indicator indicates wether a solution is acidic or alkali, often by changing colour.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is a UI?

A

A universal indicator changes colour along with the pH of the solution.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is a state symbol and what can they be?

A

A state symbol is used in equations to show the state of the reactants and products. They can be aqueous (aq), gas (g), liquid (l), or solid (s).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

How is a salt formed?

A

When an acid reacts with a metal or when a acid and an alkali neutralise.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are metal hydroxides and metal oxides?

A

Bases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What reaction takes place when an acid reacts with a base and what are the products?

A

Neutralisation. A salt in an aqueous solution and hydrogen gas are formed.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

How do we get the salt from the solution?

A

Evaporation of the water.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the visible change when an acid reacts with an alkali?

A

There is none.

17
Q

What compound is produced in every neutralisation reaction?

A

Water, H2O

18
Q

How do we make lead iodide? What is it? How do we remove it from the solution?

A

We mix solutions of lead nitrate and potassium iodide. It is a precipitate which can be filtered from the solution, washed with distilled water and dried.

19
Q

How can pollutants such as metal ions be removed from water?

A

Precipitation

20
Q

How does precipitation work?

A

The water is treated by adding substances that react with the pollutant metal ions dissolved in the water to form insoluble salts.

21
Q

How do you make a soluble salt?

A

React an acid with an alkali

GCSE Chemistry (16 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions