Brainscape's Knowledge GenomeTM

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


See full index

YEAR 9 - Chemistry > Booklet 3 > Flashcards

Booklet 3 Flashcards

You may prefer our related Brainscape-certified flashcards:
Periodic Table flashcards Chemistry 101 flashcards AP® Chemistry flashcards Organic Chemistry 101 flashcards
1
Q

What is needed for rusting?

A

Water and Oxygen

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

What is Rusting?

A

The corrosion of iron

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

What is a disadvantage of physical barriers?

A

Stops working if the surface becomes scratched or broken

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

What is galvanising?

A

Coating something in iron or zinc

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

What is physical barrier protection?

A

Stops rusting by coating something to keep out air and water

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

Name a disadvantage of sacrificial protection

A

Stops working when more reactive metal is used up

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

Corrosion is what?

A

The Formation of a compound on the surface of a metal

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

What metals are used for sacrificial metals?

A

Magnesium or Zinc

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

What is rust?

A

Hydrated iron oxide

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

Name some types of physical barriers

A

Paint,oil,grease,tin and other less reactive metals

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

What speeds up rusting?

A

Salts or acids

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

What metal is obtained from Bauxite?

A

Aluminium

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

What metal is obtained from haematite?

A

Iron

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

What metal is obtained from galena?

A

Lead

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

What metal is obtained from cinnabar?

A

Mercury

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

What metal is obtained from argentite?

A

Silver

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What does REDOX stand for?

A

Reduction and Reduction reactions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What does potassium manganite decompose to produce?

A

Oxygen gas

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What decomposes to form oxygen and water? And what experiment is it from?

A

Hydrogen Peroxide (H2O2), the Elephants toothpaste experiment

20
Q

What is used in the elephants toothpaste experiment to speed up the reaction?

A

A catalyst

21
Q

Why does the chemical reaction in elephants toothpaste cause the chemical to push out of the container?

A

The oxygen gas is produced,since the molecules are further apart than liquids so the same number of molecules takes up more space and the oxygen quickly pushes it out of the container

22
Q

Combustion can be described as what?

A

A rapid, exothermic,oxidation reaction

23
Q

Define distiallation

A

Evaporation then condensation

24
Q

Define Decomposition

A

The breaking down of a molecule to form more than 1 product

25
Q

What does Sacrificial Protection involve?

A

Attaching iron to a more reactive metal

26
Q

What colour will UI turn if a solution is an acid,neutral,alkali?

A

Warm colour e.g red
Green (only)
Blue or purple

27
Q

What do acidic solutions tend to be?

A

Non-metals

28
Q

What do Alkalies tend to be?

A

Metal oxides

29
Q

What happens to elements which are burned in oxygen?

A

The are said to be oxidised

30
Q

What is the word equation for Rust?

A

Iron+oxygen+water -> hydrated iron oxide (rust)

31
Q

What is the percentage of oxygen in air?

A

20%

32
Q

In the experiment about how much air is used in rusting, how can you prove that the reaction is complete?

A

The water rises by 20% which is the amount of oxygen in air so it is reasonable to say rust has formed. (Oxygen has been used)

33
Q

Is corrosion a quick reaction?

A

No, but a more reactive metal can quicken the reaction

34
Q

Can rust form if only water or iron are present?

A

No the reaction requires both chemicals

35
Q

What does corrosion form to protect it from further rust?

A

An oxide layer

36
Q

What properties does rust have?

A

Brittle and weak, crumbles and breaks

37
Q

How can reduction be described?

A

The loss of oxygen

38
Q

In the reduction of copper oxide, what do you use or reduced the copper?

A

Carbon

39
Q

What is the word equation for the reduction of copper oxide?

A

Copper oxide + carbon -> copper + carbon dioxide

40
Q

If copper oxide has been reduced using Carbon, what has been oxidised?

A

Carbon

41
Q

What does stoichiometric mean?

A

Relating to quantities of reactants in simple integral ratios, as prescribed by an equation or formula.
(Used in a thermit reaction p15)

42
Q

Name a metal which does not react with dilute acid

A

Sodium

43
Q

What alloy is used for bridges?

A

Steel, as it is strong

44
Q

What metal burns very brightly?

A

Magnesium

45
Q

What defines being easily beaten into shape?

A

Malleable

YEAR 9 - Chemistry (7 decks)

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