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11 votes
Which is an example of making a qualitative observation

User IanBussieres
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2 Answers

13 votes
13 votes

Answer: the first one!

Explanation: measuring the speed of the chemical reaction.

User Noah Sussman
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20 votes
20 votes
measuring the speed of the chemical reaction
describing how copper changes color in chlorine
recording how long it takes to burn magnesium
showing the results of an experiment with a graph
User StephanieF
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