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.True or false: two clear glasses is needed for the dissolving test. (a) False (b) True
- 2.True or false: sugar in icy water dissolves faster. (a) False (b) True
- 3.🥄 Which of these dissolves slower? (a) sugar stirred well (b) sugar in warm water (c) powdered sugar (d) sugar in icy water
- 4.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) a big sugar cube (c) sugar in icy water (d) sugar in warm water
- 5.True or false: sugar left unstirred dissolves faster. (a) False (b) True
- 6.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed
- 7.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
- 8.🥄 Which of these does not dissolve in water? (a) table salt (b) glucose powder (c) sugar (d) cooking oil
- 9.True or false: chalk powder dissolves in water. (a) True (b) False
- 10.True or false: cotton wool is needed for the dissolving test. (a) False (b) True
- 11.🧺 Which of these is not needed for the dissolving test? (a) honey (b) a clock or timer (c) cold water (d) sugar
- 12.True or false: sugar in warm water dissolves slower. (a) True (b) False
- 13.🔍 Which is the odd one out? (a) sand (b) glucose powder (c) baking soda (d) sugar
- 14.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) the youngest child (c) nobody needs to (d) a friend who is running
- 15.True or false: food colour dissolves in water. (a) True (b) False
- 16.🧺 Do we need cotton wool for the dissolving test? (a) not needed (b) needed
- 17.🥄 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
- 18.🧺 Do we need sugar for the dissolving test? (a) needed (b) not needed
- 19.📘 What do we call water with sugar dissolved in it? (a) a crystal (b) a magnet (c) a rainbow (d) a solution
- 20.🥄 Which of these dissolves faster? (a) sugar stirred well (b) a big sugar cube (c) sugar in icy water (d) sugar left unstirred
- 21.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
- 22.🧺 Do we need cold water for the dissolving test? (a) needed (b) not needed
- 23.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is what we measure. (a) True (b) False
- 24.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the amount of water (b) time to dissolve (c) the kind of sugar (d) the stirring
- 25.🥄 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
- 26.⚖️ 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
- 27.True or false: cooking oil dissolves in water. (a) False (b) True
- 28.🥄 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
- 29.⚖️ 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 change it (c) we keep it the same
- 30.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) a teaspoon (c) a clock or timer (d) a comb
- 31.🔮 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
- 32.True or false: sugar stirred well dissolves slower. (a) True (b) False
- 33.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) slower (b) the same (c) not at all (d) faster
- 34.🧺 Which of these is not needed for the dissolving test? (a) a magnet (b) cold water (c) a clock or timer (d) warm water
- 35.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we measure it (b) we keep it the same (c) we change it
- 36.🛟 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
- 37.🥄 Which of these does not dissolve in water? (a) sugar (b) table salt (c) sawdust (d) baking soda
- 38.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a balloon (b) two clear glasses (c) warm water (d) a teaspoon
- 39.🥄 Which of these dissolves slower? (a) sugar left unstirred (b) sugar stirred well (c) powdered sugar (d) sugar in warm water
- 40.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is what we measure. (a) True (b) False
Answer key
- True
- False
- sugar in icy water
- sugar in warm water
- False
- needed
- faster
- cooking oil
- False
- False
- honey
- False
- sand
- a grown-up
- True
- not needed
- does not dissolve
- needed
- a solution
- sugar stirred well
- slower
- needed
- False
- time to dissolve
- dissolves in water
- we change it
- False
- does not dissolve
- we keep it the same
- a comb
- powdered sugar
- False
- faster
- a magnet
- we keep it the same
- look for leftover grains
- sawdust
- a balloon
- sugar left unstirred
- False
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