Acids, Alkalis, Bases, Titrations, Salt Preparations Flashcards

1
Q

Litmus colours

A

Red - Blue

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

Methyl Orange

A

Red - Yellow

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

Phenophthalein

A

Colourless - pink

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

Universal indicator

A

Red - Blue

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

What are bases?

A

Bases are substances that neutralise acids by combining with the hydrogen ions in them

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

Common sodium, potassium and ammonium compounds are?

A

Soluble

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

All nitrates are?

A

Soluble

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

Common chlorides are?

A

Soluble (except silver and lead)

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

Common sulphates are?

A

Soluble (expect barium calcium and lead)

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

Common carbonates are?

A

Insoluble (except sodium potassium and ammonium)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Common hydroxides are?

A

Insoluble (except sodium potassium and calcium)

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

Metal + acid

A

= salt + hydrogen

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

Metal oxide + acid

A

= salt + water

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

Metal hydroxide + acid

A

Salt + water

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

Metal carbonate + acid

A

= salt + water + carbon dioxide

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

Ammonia + acid

A

= ammonium salt

17
Q

What are alkalis?

A

Soluble bases

18
Q

If you want to make a soluble salt and the base is soluble?

A

Titration

19
Q

If you want to make an insoluble salt?

A

Precipitation

20
Q

If you want to make a soluble salt from an insoluble base?

A

Prac with no name

21
Q

RP: Making copper sulfate crystals

A

1) Add 50cm3 of sulfuric acid to a 100cm3
2) Heat the acid whilst stirring with a glass rod (stop heating the acid when it reaches 60 degrees)
3) weigh out copper oxide into measuring boat - transfer to beaker
4) stir beaker for 5 mins
5) Filter the mixture into an evaporating basin

Collecting the crystals:

1) collect crystals by filtering under reduced pressure
2) use spatula - scrape crystals onto blue roll
3) gently dry crystals
4) record mass of dry crystals, stick and sample vial

22
Q

What is an acid?

A

It’s a donor of protons as it gives of hydrogen when dissolved in water

23
Q

Difference between strong and weak acids

A

Strong acids are fully ionised, but weak acids are only partly ionised in solution

24
Q

What is precipitation?

A

When we combine 2 soluble salts to make an insoluble salt

25
Q

Acids give off what to other substances?

A

Protons

26
Q

Bases are proton……?

A

Acceptors

27
Q

Acids in aqueous solutions are a source of what ions?

A

Hydrogen

28
Q

Alkalis in aqueous solutions are a source of what ions?

A

Hydroxide