Two sets of the same apparatus were left in a dark room and an electric lamp was placed next to each beaker. Both sets of apparatus were left for 24 hours.
In one experiment, the electric lamp was left on for the whole of the 24 hours.
In a second experiment, the electric lamp was switched off for the final 12 hours of the investigation.
a) In which experiment would more gas be collected?
b) Explain your answer
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Answer:
What to do
1. Ask the adult you are working with to light the candle.
2. Watch the candle flame start out small and get bigger.
Notice how some of the wax near the wick melts.
3. As the flame burns, the wax from the candle is reacting
with something else to make the flame.
What do you think it might be?
4. Ask the adult you are working with to
carefully place a glass jar over the candle
and to leave it there.
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