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