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  • Created by: nanxy12
  • Created on: 28-03-16 16:25
What is in the nucleus of an atom?
Proton and Neutron
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What is the charge of a Proton?
Positive
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What is the charge of a Electron?
Negative
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What is the charge of a Neutron?
No charge
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What is the overall charge of an atom?
Neutral
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What happens when electrons are added or removed?
Becomes an ion
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What do elements consist of?
One type of atom
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Which two components of an atom are equal?
Number of protons and Neutrons
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What is the top number of the element?
Mass number and the total number of Protons and Neutrons
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What is the bottom number of the element?
Atomic number and the number of Protons
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What is the chemical formula for Calcium Carbonate (Limestone)?
CaCO3
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What are the products of the thermal decomposition of Limestone?
Calcium Oxide (CaO) and Carbon Dioxide (CO2)
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What happens when Calcium Oxide reacts with Water?
Produces Calcium Hydroxide (Ca(OH)2)
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What can Calcium Hydroxide be used to test for?
Carbon Dioxide, if you bubble gas through Limewater the solution will turn cloudy in the presence of CO2
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What other things can limestone be used for?
Used to make Cement, Mortar and Concrete
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What are the 4 disadvantages of quarrying Limestone?
Makes a lot of noise, destroys habitats, waste products produce huge waste sights and air pollution from the transportation of Limestone
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What are the 4 advantages of Limestone?
Provides things that people want such as houses and roads, used to neutralise acidic soil, neutralise sulphur dioxide and provides jobs and
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What is a metal ore?
A rock which contains metal
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What are the two ways a metal can be extracted from its ore?
Reduction (using Carbon) and Electrolysis
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What metals are extracted using Electrolysis?
Potassium, Sodium, Calcium, Magnesium and Aluminum
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What metals are extracted using Reduction (using Carbon)?
Zinc, Iron, Tin and Copper
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Why is Aluminium an expensive metal?
It uses a lot of energy to extract it from its ore
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What is Electrolysis?
Breaking down of a substance using electricity
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What charge is the Cathode and Anode?
Cathode is negative and the Anode is positive
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How is Electrolysis used to get copper?
Electrons are pulled off Copper atoms at the anode, they are then in the solution and become Cu2+ ions, Cu2+ atoms near the cathode gain an electron and turn back into Copper atoms, the impurities are dropped at the anode as sludge
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How can you extract Copper from a solution?
Displacement Reaction
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Give two methods used to extract metals from soil?
Bioleaching and Phytomining
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Give three reasons why recycling metal is important.
Energy isn't cheap so it saves money, fossil fuels are running out and there is a finite amount of metal on Earth
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State three properties of metal.
Metals are strong, they are good at conducting heat, they conduct electricity well
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What are two problems with metals?
Some corrode when exposed to water and air, they are weakened over time
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What is a property of an Alloy?
Harder than pure metals due to different sized particles
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How is Crude Oil separated?
Fractional Distillation
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What's the general formula for a Alkane?
CnH2n+2
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List three ways to reduce acid rain.
Removed from fuels before they are burned, use Acid Gas Scrubbers to take out the harmful gases out and reduce the use of fossil fuels
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Other cards in this set

Card 2

Front

What is the charge of a Proton?

Back

Positive

Card 3

Front

What is the charge of a Electron?

Back

Preview of the front of card 3

Card 4

Front

What is the charge of a Neutron?

Back

Preview of the front of card 4

Card 5

Front

What is the overall charge of an atom?

Back

Preview of the front of card 5
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