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.
NameDateTime takenScore ___ / 40
- 1.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
- 2.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we change it (b) we measure it (c) we keep it the same
- 3.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is the one thing we change. (a) True (b) False
- 4.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we measure it (b) we keep it the same (c) we change it
- 5.🧺 Do we need honey for the dissolving test? (a) not needed (b) needed
- 6.⚖️ 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 measure it (c) we keep it the same
- 7.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
- 8.🧺 Which of these is needed for the dissolving test? (a) honey (b) a comb (c) a clock or timer (d) cotton wool
- 9.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) the sugar cube (c) neither of them (d) powdered sugar
- 10.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) cold water (c) a balloon (d) two clear glasses
- 11.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed
- 12.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
- 13.🥄 Which of these dissolves faster? (a) sugar in icy water (b) sugar left unstirred (c) sugar stirred well (d) a big sugar cube
- 14.🔍 Which is the odd one out? (a) table salt (b) small pebbles (c) food colour (d) glucose powder
- 15.True or false: powdered sugar dissolves faster. (a) False (b) True
- 16.🥄 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
- 17.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) look for leftover grains (c) poke it with a finger (d) taste it
- 18.📘 What do we call water with sugar dissolved in it? (a) a magnet (b) a crystal (c) a rainbow (d) a solution
- 19.🧺 Do we need cotton wool for the dissolving test? (a) needed (b) not needed
- 20.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) slower (c) not at all (d) the same
- 21.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the kind of sugar (b) time to dissolve (c) the water temperature
- 22.🥄 Which of these dissolves slower? (a) sugar in warm water (b) sugar left unstirred (c) powdered sugar (d) sugar stirred well
- 23.True or false: a mirror is needed for the dissolving test. (a) False (b) True
- 24.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is what we measure. (a) True (b) False
- 25.True or false: sugar dissolves in water. (a) False (b) True
- 26.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is kept the same. (a) False (b) True
- 27.True or false: two clear glasses is needed for the dissolving test. (a) False (b) True
- 28.🥄 Does powdered sugar dissolve faster or slower? (a) faster (b) slower
- 29.True or false: sugar in icy water dissolves slower. (a) True (b) False
- 30.True or false: cotton wool is not needed for the dissolving test. (a) True (b) False
- 31.🔍 Which is the odd one out? (a) sand (b) chalk powder (c) sawdust (d) glucose powder
- 32.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) sugar (c) a balloon (d) cold water
- 33.True or false: sugar left unstirred dissolves faster. (a) True (b) False
- 34.🥄 Which of these dissolves slower? (a) sugar stirred well (b) powdered sugar (c) sugar in icy water (d) sugar in warm water
- 35.🥄 Which of these dissolves slower? (a) sugar stirred well (b) sugar in warm water (c) a big sugar cube (d) powdered sugar
- 36.🛟 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
- 37.🥄 Which of these dissolves in water? (a) sugar (b) small pebbles (c) chalk powder (d) sawdust
- 38.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) sugar (c) cold water (d) cotton wool
- 39.True or false: glucose powder does not dissolve in water. (a) True (b) False
- 40.True or false: sugar in icy water dissolves faster. (a) True (b) False
Answer key
- slower
- we keep it the same
- False
- we keep it the same
- not needed
- we measure it
- slower
- a clock or timer
- powdered sugar
- a balloon
- needed
- slower
- sugar stirred well
- small pebbles
- True
- dissolves in water
- look for leftover grains
- a solution
- not needed
- faster
- the kind of sugar
- sugar left unstirred
- False
- False
- True
- True
- True
- faster
- True
- True
- glucose powder
- a balloon
- False
- sugar in icy water
- a big sugar cube
- a grown-up
- sugar
- cotton wool
- False
- False
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