What is an atom? What is a compound? What is a mixture and how is it different to a compound?

1. Preparation task for UNIT 1 – please bring your answers to the first lesson of the next unit (insert date here). This is new content – you won’t have studied it before! However, the answers can easily be found, for example on BBC Bitesize. What is an atom? What is a compound? What is a mixture and how is it different to a compound? Draw an atom with the following parts labelled: nucleus, electron, proton, neutron, electron shell. How many electrons can the first, second and third shells of an atom hold? Where are the metals and non-metals found in the periodic table (describe in terms of left and right). Give one fact EACH about the group 1, 7 and 0 elements.

2. Preparation task for UNIT 2 – please bring your answers to the first lesson of the next unit (insert date here). This is new content – you won’t have studied it before! However, the answers can easily be found, for example on BBC Bitesize. What types of elements form ionic bonds? What types of elements form covalent bonds? What types of elements form metallic bonds? What happens to the electrons in ionic bonding? What happens to the electrons in covalent bonding? In metallic bonding, electrons become delocalised – what does this mean? The following state symbols are used when writing chemical equations. What do they mean: (aq), (s), (l), (g)? What is a polymer? What is an alloy? What do diamond, graphite and graphene all have in common?

3. Preparation task for UNIT 3 – please bring your answers to the first lesson of the next unit (insert date here). This is new content – you won’t have studied it before! However, the answers can easily be found, for example on BBC Bitesize. Write down the ‘law of conservation of mass’. Find the relative atomic masses of the following: Magnesium, Calcium, Copper, Iron. (Use your periodic tables). What is the relative FORMULA mass? A mole of a substance is how many atoms, molecules or ions? (this number is also known as Avagadro’s constant). What does uncertainty mean, in terms of taking chemical measurements? What is a ‘limiting reactant’? What is the formula for calculating concentrations in chemistry? Concentration =?

4. Preparation task for UNIT 4 – please bring your answers to the first lesson of the next unit (insert date here). This is new content – you won’t have studied it before! However, the answers can easily be found, for example on BBC Bitesize. Write down the definition of oxidation and reduction IN TERMS OF OXYGEN. What does the reactivity series of metals show you? What is meant by the term ‘ore’? Write down the definition of oxidation and reduction IN TERMS OF ELECTRONS. What is ALWAYS produced when a metal reacts with an acid? What is ALWAYS produced when an alkali reacts with an acid? What do aqueous solutions of acids ALWAYS produce? What do aqueous solutions of alkalis ALWAYS produce? Explain what is meant by electrolysis (write two sentences)

5. Preparation task for UNIT 5 – please bring your answers to the first lesson of the next unit (insert date here). This is new content – you won’t have studied it before! However, the answers can easily be found, for example on BBC Bitesize. What is an endothermic reaction? What is an exothermic reaction? Give an example of an endothermic reaction. Give an example of an exothermic reaction.

6. Preparation task for UNIT 6 – please bring your answers to the first lesson of the next unit (insert date here). This is new content – you won’t have studied it before! However, the answers can easily be found, for example on BBC Bitesize. How can you calculate MEAN rate of reaction? Describe one way that you can measure the volume of gas produced in a reaction. What do reacting particles have to do in order for a reaction to happen? List at least two factors that affect rate of reaction. What is a catalyst? What does it do to the rate of reaction? What is a reversible reaction? At equilibrium, what can you say about the rates of the forwards and backwards reactions?

7. Preparation task for UNIT 7 – please bring your answers to the first lesson of the next unit (insert date here). This is new content – you won’t have studied it before! However, the answers can easily be found, for example on BBC Bitesize. What is crude oil? What is a hydrocarbon? What is an alkane? What is fractional distillation and why is it important? To release energy from hydrocarbons, we burn them. This is called combustion. What is always produced through the combustion of hydrocarbons? What are alkenes? What is cracking and why is it important? (it is not the same as fractional distillation!

8. Preparation task for UNIT 8 – please bring your answers to the first lesson of the next unit (insert date here). This is new content – you won’t have studied it before! However, the answers can easily be found, for example on BBC Bitesize. What is the definition IN CHEMISTRY of a pure substance? What is a formulation? What happens during chromatography? How do you test for hydrogen – what is a positive result? How do you test for oxygen – what is a positive result? How do you test for carbon dioxide – what is a positive result? How do you test for chlorine – what is a positive result?

9. Preparation task for UNIT 9 – please bring your answers to the first lesson of the next unit (insert date here). This is new content – you won’t have studied it before! However, the answers can easily be found, for example on BBC Bitesize. The main gases in the atmosphere today are oxygen, nitrogen and other gases like carbon dioxide, water vapour and noble gases. What are their approximate percentages? When the Earth was formed 4.6 billion years ago, what was the atmosphere like (how much oxygen and carbon dioxide was there?). How did the formation of oceans help to decrease the amount of carbon dioxide in the atmosphere? How did the evolution of plants help to decrease the amount of carbon dioxide and increase the amount of oxygen in the atmosphere? What is a greenhouse gas and give two examples. Define the term ‘carbon footprint’. Burning fuels can release sulfur dioxide, carbon monoxide and soot (particulates). What is a problem related to each of these?

10. Preparation task for UNIT 10 – please bring your answers to the first lesson of the next unit (insert date here). This is new content – you won’t have studied it before! However, the answers can easily be found, for example on BBC Bitesize. Give examples of natural resources that humans use. Describe the difference between finite and renewable resources. What does the term ‘potable water’ mean? Describe in a sentence what ‘phytomining’ and ‘bioleaching’ are. What is a lifecycle assessment and why is one useful? Re-use and recycling are both ways of reducing the use of natural resources. What is the difference between the two terms?