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