Chemistry Paper 2 with 100% correct answer

What is the word for an alloy of iron and carbon? - steel Alkanes contain the maximum possible amount of hydrogen, they are known as being __________. What one word completes the sentence? - saturated why does increasing the concentration of reactants increase the reaction rate? - the reactant particles are more crowded so they collide more often What word is used to describe how fast or slow a reaction is? - rate True or false? A catalyst provides a different pathway for a reaction that has a higher activation energy. - false An iron catalyst is used to lower the activation energy of a reaction. What effect will this have on the overall energy change of the reaction? - stays the same True or false? Only reversible reactions in open systems can reach equilibrium. - false If the temperature of a reversible reaction is raised, the yield from the exothermic reaction... what? - decreases Equilibrium is reached when the forward reaction happens at exactly the same __________ as the backward reaction. What one word completes this sentence? - rate/ speed True or false? An equilibrium position always responds to oppose any change in the reaction conditions. - true For gaseous reactions at equilibrium an increase in pressure causes the equilibrium position to shift towards the side with the __________ number of molecules. What word is missing from this sentence? - smaller