Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Year 9 Chemistry > Topic 3- Patterns Of Reactivity, NEED FOR YEAR 10 > Flashcards

Topic 3- Patterns Of Reactivity, NEED FOR YEAR 10 Flashcards

1
Q

How do we know sodium is a very cheap metal

A

With all that sodium chloride in the sea

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

What things might affect the cost of sodium metal

A

The process of getting sodium from sodium chloride costs a lot and takes a lot of labour and taking away the chlorine

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

Do all metals react with acid

A

No. Because not all metals react with acid

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

Why isn’t armour in the Middle Ages likely to be made from aluminium

A

Because aluminium is very soft and wasn’t discovered till mid 19th century

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

List some metals that’s react well with water

A

Lithium, potassium and sodium

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

Reacting metals with oxygen equation

A

Metal + oxygen –> metal oxide

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

We are going to heat some metals in the air and record some observations
Copper
Iron
Magnesium

A

Copper-turns black
Iron-orange Sparks
Magnesium- bright white light

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

Put copper, iron and magnesium in order of reactivity (most reactive first)

A

Magnesium
Iron
Copper

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

Complete word equations for
Magnesium + oxygen –>
Iron + oxygen –>
Copper + oxygen –>

A

Magnesium + oxygen –> magnesium oxide
Iron + oxygen –> iron oxide
Copper + oxygen –> copper oxide

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

Reacting metals with water:
In year 8 we looked at alkali metals reacting with water:
How are the reactions similar?

A 
They all get oxidised
Hydrogen is given off
Fizz across surface
React vigorously
They give off gas
Moves across surface
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Reacting metals with water
In year 8 we looked at alkali metals reacting with water:
How do the reactions differ

A

Potassium catches fire and burns with a lilac flame

Sodium & potassium react more quickly than lithium (reactivity increases as you move down the group)

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

Reacting metals with water
In year 8 we looked at alkali metals reacting with water:
What safety precautions are taken when using these metals

A

Safety googles
Safety screen
Metals are stored under oil

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

Why are potassium, lithium and sodium stored under oil in their jars

A

Because they react vigorously with water

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

List the metals in order of reactivity starting no with the most reactive metal

A

Potassium
Sodium
Lithium

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

The alkaline solutions formed as the group 1 metals react with water are called……
Do the equation too

A

Hydroxides

Metal+water–>metal hydroxide +hydrogen

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

Results for the reaction of calcium magnesium and copper with water

A

Calcium- sinks and rises, bubbles of gas, vigorous reaction
Magnesium- a few bubbles of gas, reacts slowly
Copper-no reaction

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

What two things are produced when metals react with water

A

Metal hydroxide and hydrogen gas

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

Put the metals magnesium, copper and calcium in order of reactivity starting with the most reactive

A

Calcium
Magnesium
Copper

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

Complete the following word equations for the reactions of the metals with water, wrote no reaction if there is no reaction
Calcium+water–>
Magnesium+water–>
Copper+water–>

A

Calcium+water–>calcium hydroxide + hydrogen
Magnesium+water–>magnesium hydroxide+hydrogen
Copper+water–>no reaction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

List all the metals you have met so far in order of reactivity starting with the most reactive with water

A 
Potassium
Sodium
Lithium
Calcium
Magnesium
Iron
Copper
Silver
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Equation for reacting metals with acid

A

Metal+acid–>salt+hydrogen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What is usually produced when a metal reacts with an acid

A

Salt and hydrogen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Which metals would you not try putting in acid and why

A

Potassium, sodium and lithium because they are explosive

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Add a small piece of aluminium to 5cm cubed of water, then a small piece of aluminium to 5cm cubed acid
What do you observe?

A

Nothing happened for at least 5mins. Then bubbles of gas appeared and the aluminium turned dark grey

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Add a small piece of aluminium to 5cm cubed of water, then a small piece of aluminium to 5cm cubed acid How were your observations surprising?
Aluminium is high up on the reactivity series but it took quite a while for the aluminium to react with the acid
26
What does aluminium resist
Corrosion
27
Aluminium resists corrosion so where is it widely used
Outside as greenhouse metal frames
28
Why does aluminium resist corrosion
Aluminium resists corrosion as it forms a protective oxide layer
29
Mnomemic for reactivity series
``` Peter Sold Little Chocolates Mainly All Zeebos Ironically Tim Likes Chocolates Sold Gorgeously ```
30
Charlotte adds samples of potassium, aluminium and lead into water at room temperature state the observations and conclusions
Potassium- moves across the surface, catches fire- reacts violently Magnesium-a few bubbles form on the surface-reacts slowly Her conclusion that lead does not react with water is incorrect, a reaction is taking place but so slowly that it is difficult to see. The reaction is slow as lead is very unreactive in cold water, to speed up the reaction charlotte could use hot water or steam
31
Word equation for the reactions between potassium and water
Potassium+water-->potassium hydroxide + hydrogen
32
When the reaction had ended the potassium sample is used up, but no other changes can be seen. Where do you think the products of the reaction have gone
Into the air, The water has changed to potassium hydroxide and the hydrogen gas has been given off
33
Word equation for the reaction of magnesium and water
Magnesium+water-->magnesium hydroxide + hydrogen
34
Aluminium is shown in the reactivity series to be more reactive that zinc. However, zinc reacts with water more quickly than aluminium. Why?
Aluminium has a coating of aluminium oxide on its surface of which prevents it from reacting as quickly
35
Elena puts samples of copper, magnesium, and zinc into test tubes and adds dilute sulphuric acid to each one Elena has taken steps to make sure she can compare the reactions fairly, how?
Keep the amount the same, the acid the same, plus the temperature the same
36
Elena puts samples of copper, magnesium, and zinc into test tubes and adds dilute sulphuric acid to each one Which metal will show no reaction and why
Copper as copper is very low in the reactivity series and does not react with acid
37
Elena puts samples of copper, magnesium, and zinc into test tubes and adds dilute sulphuric acid to each one What do the bubbles in test tubes containing magnesium and zinc tell you about the reactivity of the metals in these test tubes?
Both magnesium and zinc react with acid to produce hydrogen gas
38
The equation to give the general equation for the reaction of metal with dilute acid
Metal+acid-->salt+hydrogen
39
Word equation for the reaction between magnesium and sulphuric acid
Magnesium + sulphuric acid --> magnesium sulphate + hydrogen
40
Is sodium a cheap or expensive metal
Very cheap
41
Zinc + copper sulphate --->
Zinc sulfate + copper
42
Zinc + iron sulfate -->
Zinc sulfate + iron
43
Iron + copper sulfate -->
Iron sulfate + copper
44
Copper + iron sulfate -->
Copper sulfate + iron
45
Conclusion for displacement reactions: A.... Reactive metal will........a.......reactive metal from its compound. This reaction is observed by colour changes or fizzing or hear being evolved. We call this a........reaction
More Displace Less Displacement
46
What type of reaction is rusting
An oxidation reaction
47
Conclusion to what causes rusting
Iron needs both air (oxygen) and water to rust. Rust is a form of iron oxide.
48
Rusting word equation
Iron + Water + Oxygen → Hydrated Iron (III) oxide
49
Methods used to prevent iron from rusting | Painting or oiling...
Regular painting or oiling provides a protective coating. This is a very cheap and easy way to prevent rusting.  
50
Methods used to prevent iron from rusting | Plastic coating
A plastic coating prevents air and moisture reaching the iron.
51
Methods used to prevent iron from rusting galvanising
Galvanising is when iron objects are coated with a more reactive metal such as zinc or chromium.  
52
Methods used to prevent iron from rusting | Sacrificial protection
Sacrifcial protection: attaching zinc bars to ships – the water will react with the zinc before it reacts with the iron, because zinc is more reactive
53
The alkaline solutions formed as the group 1 metals react with water are called
Hydroxides
54
Pattern of reactivity starting with most reacting
``` Potassium Sodium Lithium Calcium Magnesium Aluminium Zinc Iron Tin Lead Copper Silver Gold ```
55
Rusting: | What are ships built from and why
Steel as it is readily available and strong
56
Rusting: | What does rust do to steel
Flaky, weak and dangerous
57
Rusting: | What is silica gel used for
To remove moisture
58
Rusting: | In a video about rusting some people boiled water but why
To remove any oxygen from the water
59
Rusting: | What is steel made from
Iron and carbon
60
Rusting: | Why would a car not rust in the desert
The air is very dry
61
Rusting: | Why was there not as much rust in the titanic as expected
Little oxygen is dissolved in deep water
62
Rusting: | What happened to the steel in the video that was put in the tank with salty water
Very rusty
63
Rusting: | How do we prevent rust on ships
Paint every two years
64
Rusting: | Why is gold not a good alternative to steel
Soft and too expensive
65
Rusting: | What is stainless steel and does it rust
Formed when you add chromium to steel and it does not rust
66
Rusting: | In the video which of the five metals reacted when put in the sea
Steel, copper and aluminium
67
Rusting: | When do we use aluminium
When weight is an important factor. Aluminium has a lower density than some other metals i.e. It is lighter
68
What is copper used for
Water pipes
69
``` How much rust would there be in test tubes containing: A) water + oxygen B) oxygen, no water C) water, no oxygen D) water + oxygen + zinc ```
A) lots of rust B) no rust C) very little rust D) no rust
70
What is the chemical name for rust
Hydrated iron (III) oxide
71
What conditions are required for rusting
Iron + oxygen + water
72
``` What is the best way to prevent rust on: A gate Hull of a ship Machinery Iron nail ```
Paint Sacrificial protection Oil Galvanise
73
Why does gold occur native (uncombined), whereas zinc does not
A very unreactive metal
74
Why was silver used to make coins in the past
Desirable, unreactive, malleable
75
Why is copper used to make electrical cables and wires
Conducts electricity, cheap to produce
76
Describe what you would see if you dropped a piece of magnesium ribbon into some copper sulphate solution in a test tube. Write a word equation for the reaction.
Blue colour fades and copper forms | magnesium + copper sulphate ---> magnesium sulphate + copper.....
77
Complete the following word equations. If the chemicals do not react write no reaction: Zinc + lead nitrate solution --->
Zinc nitrate + lead
78
Complete the following word equations. If the chemicals do not react write no reaction: Iron + zinc sulphate solution ---->
No reaction
79
Complete the following word equations. If the chemicals do not react write no reaction: Lead + copper nitrate solution ---->
Lead nitrate + copper
80
Complete the following word equations. If the chemicals do not react write no reaction: Magnesium + zinc chloride solution --->
Magnesium chloride + zinc
81
Complete the following word equations. If the chemicals do not react write no reaction: Copper + sodium chloride solution --->
No reaction
82
Complete the following word equations. If the chemicals do not react write no reaction: Zinc + iron sulphate solution --->
Zinc sulphate + iron
83
Complete the following word equations. If the chemicals do not react write no reaction: Gold + silver nitrate solution ---->
No reaction
84
Complete the following word equations. If the chemicals do not react write no reaction: Magnesium + calcium nitrate solution --->
No reaction
85
Three metals X, Y and Z have the following reactions:- Y will displace X from a solution of its salt. Z will displace both X and Y from solutions of their salts. Place the three metals in order of reactivity, starting with the least reactive
X, Y, Z

Year 9 Chemistry (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions