Dissolving Experiment Worksheet: Warm and Cold Water
What you do (Warm, stir, small): 1. An adult pours the same amount of warm water and cold water into two glasses. 2. Add one level teaspoon of sugar to each at the same time. 3. Stir each the same number of times and time how long the sugar takes to vanish. 4. Look, do not taste — then compare the two times.
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- 1.🥄 Which of these dissolves in water? (a) cooking oil (b) sugar (c) chalk powder (d) sawdust
- 2.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the kind of sugar (b) time to dissolve (c) the amount of sugar (d) the water temperature
- 3.🥄 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
- 4.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) slower (b) faster (c) not at all (d) the same
- 5.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) cold water (c) a mirror (d) warm water
- 6.True or false: sugar stirred well dissolves faster. (a) True (b) False
- 7.🔍 Which is the odd one out? (a) sugar (b) food colour (c) table salt (d) cooking oil
- 8.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we change it (b) we keep it the same (c) we measure it
- 9.🧺 Do we need honey for the dissolving test? (a) not needed (b) needed
- 10.True or false: a clock or timer is not needed for the dissolving test. (a) False (b) True
- 11.True or false: a balloon is not needed for the dissolving test. (a) False (b) True
- 12.True or false: a comb is not needed for the dissolving test. (a) False (b) True
- 13.🥄 Which of these dissolves slower? (a) sugar stirred well (b) powdered sugar (c) sugar in warm water (d) a big sugar cube
- 14.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we keep it the same (b) we change it (c) we measure it
- 15.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) a friend who is running (c) nobody needs to (d) the youngest child
- 16.🔍 Which is the odd one out? (a) small pebbles (b) sawdust (c) sand (d) table salt
- 17.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
- 18.True or false: cotton wool is not needed for the dissolving test. (a) False (b) True
- 19.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
- 20.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is kept the same. (a) False (b) True
- 21.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar stirred well (c) sugar in icy water (d) sugar in warm water
- 22.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it spread in the water (b) it became air (c) it vanished for ever (d) it sank as sand
- 23.True or false: sugar left unstirred dissolves slower. (a) False (b) True
- 24.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the stirring (b) the water temperature (c) the kind of sugar (d) the amount of sugar
- 25.True or false: a mirror is not needed for the dissolving test. (a) False (b) True
- 26.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) poke it with a finger (c) taste it (d) smell it closely
- 27.🥄 Which of these dissolves in water? (a) sawdust (b) small pebbles (c) chalk powder (d) table salt
- 28.True or false: sugar in warm water dissolves faster. (a) True (b) False
- 29.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar in icy water (c) powdered sugar (d) sugar left unstirred
- 30.🥄 Which of these dissolves slower? (a) sugar in warm water (b) powdered sugar (c) sugar left unstirred (d) sugar stirred well
- 31.🔍 Which is the odd one out? (a) sand (b) small pebbles (c) glucose powder (d) chalk powder
- 32.🥄 Which of these dissolves in water? (a) food colour (b) cooking oil (c) sand (d) chalk powder
- 33.🧺 Do we need cold water for the dissolving test? (a) not needed (b) needed
- 34.🔍 Which is the odd one out? (a) glucose powder (b) table salt (c) chalk powder (d) baking soda
- 35.True or false: sugar in icy water dissolves slower. (a) True (b) False
- 36.🥄 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
- 37.True or false: two clear glasses is not needed for the dissolving test. (a) True (b) False
- 38.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
- 39.🧺 Do we need a mirror for the dissolving test? (a) not needed (b) needed
- 40.🔍 Which is the odd one out? (a) food colour (b) cooking oil (c) sand (d) sawdust
Answer key
- sugar
- time to dissolve
- dissolves in water
- faster
- a mirror
- True
- cooking oil
- we measure it
- not needed
- False
- True
- True
- a big sugar cube
- we change it
- a grown-up
- table salt
- slower
- True
- we keep it the same
- True
- sugar in icy water
- it spread in the water
- True
- the water temperature
- True
- look for leftover grains
- table salt
- True
- powdered sugar
- sugar left unstirred
- glucose powder
- food colour
- needed
- chalk powder
- True
- dissolves in water
- False
- faster
- not needed
- food colour
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