Chemistry general revision cards

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At the centre of an atom is a nucleus. What does the nucleus contain?
Protons and neutrons
1 of 20
Fill in the missing word: Neutrons have a ______ charge
Neutral
2 of 20
Number of protons = number of _______?
Electrons
3 of 20
Is the mass number the number on top of an elements symbol on the periodic table, or on the bottom?
On top!
4 of 20
Number of protons + neutrons = ?
Mass number
5 of 20
What is a covalent bond?
Where one atom shares an electron with another atom.
6 of 20
What is a compound?
2 or more different element, chemically joined together.
7 of 20
Calcium Carbonate --> Calcium Oxide + ??
Carbon Dioxide
8 of 20
Which word is missing: Limewater is heated with clay to make _______?
Cement
9 of 20
Give 3 advantages of quarrying limestone
-Creates jobs -Boosts local economy -It is a needed resource
10 of 20
What do you get when you add water to Calcium Oxide?
Calcium Hydroxide
11 of 20
What is limewater a test for?
Carbon Dioxide
12 of 20
Give 3 disadvantages of quarrying limestone
ANY 3 FROM: -Destroys natural habitat -Noise pollution -Dust pollution -Air pollution (from the lorries)
13 of 20
State 2 ways metals are extracted
-Through electrolysis -Through Reduction using carbon
14 of 20
Which word is missing: Potassium, Sodium, Calcium, Magnesium and Aluminium are all extracted by _________
Electrolysis!
15 of 20
What is electrolysis?
The breaking down of a substance using electricity.
16 of 20
Copper Sulfate + Iron --> ?
Iron sulfate + Carbon
17 of 20
What is bioleaching?
Where bacteria is used to separate copper from copper sulfide. The leachate (solution produced by the process) contains copper. The copper can be extracted from the leachate (e.g by filtering)
18 of 20
Name 3 bad things burning fossil fuels is causing
Acid rain, global dimming and climate change
19 of 20
Give 2 advantages of mining metals
Any 2 from: -Creates jobs -Boosts local economy -Useful products made
20 of 20

Other cards in this set

Card 2

Front

Fill in the missing word: Neutrons have a ______ charge

Back

Neutral

Card 3

Front

Number of protons = number of _______?

Back

Preview of the front of card 3

Card 4

Front

Is the mass number the number on top of an elements symbol on the periodic table, or on the bottom?

Back

Preview of the front of card 4

Card 5

Front

Number of protons + neutrons = ?

Back

Preview of the front of card 5
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