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.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is kept the same. (a) True (b) False
- 2.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) sugar (c) a comb (d) a teaspoon
- 3.🔍 Which is the odd one out? (a) small pebbles (b) cooking oil (c) glucose powder (d) sawdust
- 4.True or false: sugar dissolves in water. (a) False (b) True
- 5.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
- 6.True or false: powdered sugar dissolves faster. (a) False (b) True
- 7.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
- 8.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) a teaspoon (c) a comb (d) honey
- 9.True or false: a big sugar cube dissolves slower. (a) True (b) False
- 10.⚖️ 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) False (b) True
- 11.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the amount of sugar (b) the amount of water (c) the water temperature (d) time to dissolve
- 12.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) cold water (c) sugar (d) honey
- 13.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) two clear glasses (c) honey (d) cold water
- 14.True or false: sugar in warm water dissolves slower. (a) False (b) True
- 15.True or false: cooking oil does not dissolve in water. (a) True (b) False
- 16.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) the sugar cube (c) both the same (d) powdered sugar
- 17.True or false: sugar in icy water dissolves slower. (a) False (b) True
- 18.🥄 Which of these does not dissolve in water? (a) sugar (b) glucose powder (c) baking soda (d) sand
- 19.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we measure it (b) we keep it the same (c) we change it
- 20.True or false: sugar left unstirred dissolves slower. (a) False (b) True
- 21.🥄 Does powdered sugar dissolve faster or slower? (a) slower (b) faster
- 22.True or false: a teaspoon is not needed for the dissolving test. (a) True (b) False
- 23.True or false: glucose powder does not dissolve in water. (a) False (b) True
- 24.🧺 Do we need warm water for the dissolving test? (a) needed (b) not needed
- 25.🥄 Which of these dissolves faster? (a) sugar in icy water (b) sugar stirred well (c) sugar left unstirred (d) a big sugar cube
- 26.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we keep it the same (b) we measure it (c) we change it
- 27.🧺 Do we need a balloon for the dissolving test? (a) needed (b) not needed
- 28.True or false: two clear glasses is needed for the dissolving test. (a) False (b) True
- 29.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is the one thing we change. (a) True (b) False
- 30.🥄 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
- 31.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar in icy water (c) powdered sugar (d) sugar left unstirred
- 32.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is what we measure. (a) False (b) True
- 33.🧺 Which of these is not needed for the dissolving test? (a) warm water (b) a teaspoon (c) cotton wool (d) a clock or timer
- 34.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) a comb (c) a magnet (d) a clock or timer
- 35.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) taste it (c) smell it closely (d) poke it with a finger
- 36.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is what we measure. (a) True (b) False
- 37.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a magnet (c) a teaspoon (d) a clock or timer
- 38.True or false: sugar is not needed for the dissolving test. (a) False (b) True
- 39.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same
- 40.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the water temperature (b) time to dissolve (c) the stirring
Answer key
- True
- a comb
- glucose powder
- True
- slower
- True
- a grown-up
- a teaspoon
- True
- False
- time to dissolve
- honey
- honey
- False
- True
- powdered sugar
- True
- sand
- we keep it the same
- True
- faster
- False
- False
- needed
- sugar stirred well
- we measure it
- not needed
- True
- False
- dissolves in water
- powdered sugar
- False
- cotton wool
- a clock or timer
- look for leftover grains
- False
- a magnet
- False
- we keep it the same
- the stirring
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