1) What is the chemical symbol for water a) H20 b) H2O c) HO2 d) h2o e) hO2 f) 2HO 2) Small insects can walk on water because it has a… a) low density b) high surface tension c) low surface tension 3) Plants use water to make food by… a) dissolving b) photosynthesis c) reproduction d) respiration 4) The percentage of your body that is water is about… a) 60 b) 16 c) 100 d) 98 e) 49 f) 70 5) The percentage of the earth that is water is about… a) 60 b) 70 c) 89 d) 98 e) 49 f) 56 6) What is representation of water being good at dissolving a) body temperature b) nutrients in the blood stream c) our tissues and joints d) keep sweat and urine inside our bodies 7) Which is more dense a) water b) ice c) water vapour

Water KS3

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