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1)
1. What did we use for conducting an experiment?
2. Where did they put a burning match?
3. What do the students need for the experiment?
4. Where did I go after the lesson?
5. When was I a pupil?
5. Where did we weight substances?
2)
1. When did our group conduct an experiment?
2. What did we do with different substances at the lesson?
3. What did the students weight on the scales?
4. Who recorded the yield of a reaction at the lesson?