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1.While boiling water in a kettle,Gwayne noticed that there are smoke coming ftom the spout of a kettle.He asked his mother, "Why did the smoke rise upward"? What do you think will be the mother's answer?
A.Because the water reached its cooling point.
B.Because the water reached its boiling point.
C.Because the water is heated and became water vapor.
D.Because the water is freezing.
2.What technique will Jocelyn use if she wants to separate salt mixed with water in a container.
A.Filtering
B.Evaporation
C.Picking
D.Sedimentation
3.In filtering technique of separating mixtures,what type of material passes through a filter paper or cloth?
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