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