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