Combined Chemistry Paper 1 & 2 Revision Bundle

What are the 3 states of matter? - Ans .Solid, liquid and gas What is the process for extracting iron form its ore? - Ans .Heat it with carbon (coke) in a blast furnace Why is carbon used for extracting iron from ore? - Ans .It is more reactive What is chromatography used to separate? - Ans .A ...

What is an element? - Ans .A substance that contains only one type of atom Atom - Ans .Smallest particle of an element Isotope - Ans .each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relativ...

*Chromatography* - Ans .-Chromatography is a method used by chemists to separate out mixtures. -Chromatography works because different dyes move up the paper and different rates. -Some will stick to the paper and others will dissolve more readily in the solvent and travel more quickly. -You ...

atom - Ans .smallest particle of an element proton - Ans .- positively charged particle - has a mass of 1 and a charge of +1 - found in the nucleus of the atom. neutron - Ans .- has no charge(neutral) and a mass of 1. - found in the nucleus of an atom electron - Ans .- a negatively charged p...

▪ How would you describe the pH of carbon dioxide - Ans .slightly acidic ▪ Why is it bad for plastic bags to be burned - Ans .Release toxic gases that are bad for human health and release greenhouse gases that harm the environment ▪ If talking about bromine water etc, what is the term used...

How do you measure the rate of a reaction? - Ans .By measuring the quantity of a reactant used or the quantity of product formed over time What is the equation for calculating the mean rate of a reaction by measuring the amount of reactant used? - Ans .Mean rate of reaction = quantity of reac...

Mean rate of reaction (with reactant) - Ans .Rate of reaction: Quantity of reactant used ---------------------------- Time taken Mean rate of reaction (with product) - Ans .Rate of reaction: Quantity of product formed ---------------------------- Time taken Measurements for quantity of produ...

pure substance - Ans .single element, compound or substance not mixed with another substance physical processes - Ans .mixtures can be separated by... simple distillation - Ans .evaporating water and condensing it in a separate container fractional distillation - Ans .evaporating liquids wi...

What colour flame does sodium produce? - Ans .yellow What colour flame does lithium produce? - Ans .crimson What colour flame does potassium produce? - Ans .lilac What colour flame does calcium produced? - Ans .orange-red What colour flame does copper produce - Ans .green Some fireworks contain...

What are the group 1 metals known as? - Ans .The Alkali Metals Reactivity within the groups: - Ans .Alkali metals: reactivity increases as you go down, melting point/boiling point decreases as you go down Halogens: reactivity decreases as you go down and melting point/boiling point increases a...

▪ High - Ans .Giant ionic structures melting point/ boiling point ▪ Closely packed lattice arranged by the attraction between oppositely charged ions - Ans .Giant ionic structures structure ▪ The electrostatic attraction between oppositely charged ions is very strong so requires a lot of ...

Activation emnergy - Ans .minimum amount of energy needed for a reaction to occur why does increasing the temperature increase the rate of reaction? - Ans .particles have more kinetic energy more frequent collisions collisions are harder and more successful concentration? - Ans .more particles...