Crude oil is a mixture of different compounds (hydrocarbons)
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What are hydrocarbons?
Hydrocarbons are chemical compounds made of hydrogen and carbon atoms only
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What is fractional distillation?
The process of separating crude oil
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How is concrete made?
By mixing cement, sand, aggretate and water
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How is cement made?
By mixing limestone with clay and heating in a kiln
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What is Carbon Monoxide?
A colourless, odourless, poisonous gas
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What is the mass number?
The total number of protons and neutrons in the nucleus of an atom
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What is the atomic number?
All atoms of an element, containing the same number of protons
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What is a compound?
A compound is formed when two or more elements are combined together
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Do protons have a positive or negative charge?
Positive charge (Proton- Positive)
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Do neutrons have a positive, negative or no charge?
No charge because they are neutral and neutral means no charge (NEUTRons- NEUTRal)
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Why are atoms neutral?
Because they have no charge
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Why are elements put into groups on the periodic table?
They are put into groups corresponding to the amount of electrons they have
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What happens when a metals react with a non- metal?
Ions are formed
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What do compounds of metals bonded with non-metals have?
Ionic bonds
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What happens to the atoms of a non- metal when combined?
They share electrons to form covalent bonds
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REMEMBER:
The mass of PRODUCTS is equal to the mass of REACTANTS
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What is the process of BREAKING DOWN by HEATING?
Thermal composition.
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What does the process of thermal decomposition do?
Calcium Carbonate (CaCO2) is broken down by heating to make Calcium Oxide (CaO) and Carbon Dioxide (CO2)
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What are uses of Limestone?
For building material, to make carbon oxide and cement
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What is the main use of Limewater?
It's used to test Carbon Dioxide. The limestone turns cloudy when reacted with it, the solution produced is Carbon Carbonate
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What is Calcium Hydroxide?
Calcium Hydroxide is an alkali made from Calcium Oxide and water. Its used to neutralise acids and can be reacted with CO2 to produce Calcium Carbonate
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What is an ore?
Rock from which metal can be extracted
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Why are steels alloys of iron?
Because they are mixtures of iron with carbon and other elements
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Other cards in this set
Card 2
Front
What are hydrocarbons?
Back
Hydrocarbons are chemical compounds made of hydrogen and carbon atoms only
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