AQA Triple Science C3 Unit 3 Chemistry

How did Newland and Mendeleev arrange the elements?

What do the groups contain?

Why was the atomic mass order incorrect?

What did Mendeleev do that was innovative?

How have elements been ordered since the early 20th century?

What is important about elements found in the same group?

What are elements in group 1 called?

What is the charge of group 1 metal ions?

What type of compounds are formed from group 1 elements reacting with non-metals?

What colour are group 1 salts?

What colour are group 1 salt solutions?

What are the products when group 1 elements are reacted with water?

How does reactivity change down group 1? And why does it change like this?

How does the melting point change down group 1 elements?

Give three differences between transition metals and group 1 elements.

What colour are transition metal salts?

Give a use for transition metals.

What are group 7 elements called?

What charge is on halide ions?

How does reactivity change down group 7? And why does it change like this?

How does the melting point change down group 7?

What is formed when soft water reacts with soap?

What is formed when hard water reacts with soap?

Which ions cause hard water?

How do these ions get into the water?

What are the 2 types of hard water?

How can we get rid of temporary hardness?

What ions are in temporary hard water?

What ions are formed when hydrocarbonate ions decompose?

What are formed when calcium and magnesium react with carbonate ions?

why does hard water increase cost?

What is formed when temporary hard water is boiled?

How does limescale affect appliances?

Give 2 benefits of hard water.

Give two ways hard water can be softened.

What do water filters contain?

What is added to water to improve dental health?

Why is chlorine added to water?

How else can water be purified?

How can we measure the amount of energy released by a reaction?

What is the equation used to calculate tje amount of energy?

In what unit is energy measured in?

For what reactions can this be used for?

Which type of reaction has reactants of higher energy than its products?

What type of reaction has products at a higher energy than the reactants?

What process in a reaction needs energy to be supplied?

During which process in a reaction is energy released?

What makes a reaction exothermic?

What makes a reaction endothermic?

How do catalysts work?

What is produced when hydrogen burns in air?

For what can this reaction be used for?

what is the flame colour for potassium?

What is the flame colour for calcium?

Which ions give White precipitates with sodium hydroxide?

Which ion's precipitate re-dissolves in excess sodium hydroxide?

What colour precipitate is the Fe(II) precipitate?

What is formed when carbonates react with an acid ?

What is the test for carbon dioxide?

What is used to test for halides?

What is the colour for chloride?

What is the colour for bromide?

What is the colour for Iodide?

What is used to test for sulphate ions?

How do we measure the amount of acid and alkali in a reaction?

For what do we use titration results?

What are the raw materials for the Haber process?

Where does nitrogen come from?

Where does the hydrogen come from?

What catalyst is used?

What temperature is used

What pressure is used?

What is the main problem with the reaction?

What happens to the ammonia?

What happens to the nitrogen and hydrogen?

When is equilibrium reached?

What happens to the yield of ammonia at high temperatures?

What happens to the yield of ammonia at high pressures?

What else needs to be considered when looking for optimum conditions for industrial reactions?

What is the functional groups of alcohols?

What are the first three alcohols?

Give three properties of alcohols.

Give two uses of alcohols.

Which alcohol is found in alcoholic drinks?

What reaction changes ethanol into ethanoic acid?

What is ethanoic acid?

What is the functional group of carboxylic acids?

Give three properties of carboxylic acids.

What is used as a catalyst in an esterification reaction?

Why are carboxylic acid weak acids?

Do weak acids have a higher or lower pH value?

Which ester is produced from ethanol and etahnoic acid?

What is the functional group of esters?

Give 2 properties of esters.

For what are esters used?