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How many elements are there?
describe the relative charges of protons neutrons and electrons
Why do atoms have no overall chage
What is the relative masses of the proton , neutron and electron
How do you calculate the number of neutrons in an atom
why are the noble gasses unreactive
what is conservation of mass theory
What is limestone?
Describe the thermal decomposition of limestone
Which other carbonates can be decomposed. ? can they all be decomposed in the lab ?
Describe the reaction between calcium oxide and water
describe how lime water is used to test for carbon dioxide?
describe the reaction between carbonates and acid
describe how cement , mortar and concrete are made
what is the formula of calcium hydroxide?
What is an ore ?
How are most metals found?
How are metals less reactive than C extracted ?
What is reduction ?
How are metals more reactive that C extracted and why are these metals more expensive?
How is copper extracted ?
What is phytomining?
What is bioleaching?
How is copper extracted from copper salts?
Why is the extraction of aluminium and titanium expensive?
Why should we recycle metals?
List the advantages and disadvantages of limestone products
describe the advantages of using limestone?
describe the disadvantages of using limestone?
what is an element
what is a molecule
what is a compound
what sort bonds are formed between non - metals
how are covalent bonds formed
what sort of bonds form between metals and non - metals
how do ionic bonds form
limewater goes cloudy when mixed with carbon dioxide. explain why using an equation
explain why acids damage limestone
farmers spread calcium hydroxide on fields with acidic soils. explain why
what are the advantages and disadvantages for an area in which limestone is quarried
how does limestone remove sulphur dioxide from power stations
what does calcium carbonate + acid produce
