Reactions of metals with dilute acids
1 mark · EasyState one observation that would indicate a metal is more reactive when it reacts with dilute hydrochloric acid compared to another metal.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
Show answer
More vigorous fizzing (or faster gas production), larger temperature increase, or more rapid reaction.
Also accept: Rapid fizzing; Bubbles produced faster; Louder or quicker 'pop' with a splint; Temperature rises more; Test tube gets hotter quicker; Reaction is faster
Common mistakes: Just stating a reaction occurs, without comparison
Show mark scheme and worked solution
Marking points
B1 · 1 mark · Any valid observation that gives clear evidence that one metal is more reactive than another (e.g., faster fizzing, louder 'pop', greater temperature rise).
Worked solution
A more reactive metal will produce more vigorous fizzing or bubbles more quickly when added to dilute hydrochloric acid.