Complete Gcse Chemistry Higher (Aqa) |320 Questions| With Correct Answers.

What are the main chemical properties of alcohols? {Ans: Flammable and undergo complete combustion to produce CO2 and H2O, MEPB are all soluble in water and have a neutral pH, they react with sodium producing H, can be oxidised to form a carboxylic acid e.g. ethanoic acid}What uses are there for fullerenes? {Ans: Can cage other molecules for medical use Large SA means it could be used to attach catalyst molecules in industry Make good lubricants}What is the Avogadro Constant? {Ans: 6.02 x 10^23}What is the functional group of a carboxylic acid? {Ans: -COOH}What is collision theory? {Ans: The rate of chemical reaction depends on the collision frequency of the particles and how much energy is transferred in the collision}How is a battery formed? {Ans: By connecting 2 or more cells in series, combining their voltages}What features of a ROR graph defines the fastest reactions? {Ans: The quickest reactions have the steepest lines and become flat in the least time}How do you find the empirical formula for an ionic compound from a 3D Model? {Ans: Find the ions in the compound and deduce what charges the ions will form. Balance the charges