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: sugar in warm water dissolves slower. (a) True (b) False
- 2.🔍 Which is the odd one out? (a) food colour (b) sand (c) baking soda (d) glucose powder
- 3.⚖️ 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) False (b) True
- 4.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) not at all (c) slower (d) the same
- 5.⚖️ 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 measure it (c) we keep it the same
- 6.🔍 Sand is stirred into water. What do you see after a while? (a) it dissolves (b) it floats up (c) it turns blue (d) it settles at the bottom
- 7.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
- 8.True or false: warm water is not needed for the dissolving test. (a) True (b) False
- 9.🔍 Which is the odd one out? (a) chalk powder (b) glucose powder (c) sugar (d) food colour
- 10.🛟 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
- 11.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed
- 12.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) cold water (c) a comb (d) a clock or timer
- 13.🥄 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
- 14.True or false: baking soda dissolves in water. (a) True (b) False
- 15.True or false: sugar in icy water dissolves faster. (a) False (b) True
- 16.🥄 Which of these dissolves in water? (a) baking soda (b) cooking oil (c) sand (d) small pebbles
- 17.🧺 Which of these is needed for the dissolving test? (a) honey (b) a balloon (c) sugar (d) a mirror
- 18.🧺 Which of these is needed for the dissolving test? (a) honey (b) a balloon (c) two clear glasses (d) a mirror
- 19.🥄 Which of these dissolves slower? (a) sugar stirred well (b) sugar left unstirred (c) sugar in warm water (d) powdered sugar
- 20.⚖️ 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 water
- 21.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
- 22.🧺 Which of these is not needed for the dissolving test? (a) cotton wool (b) a clock or timer (c) two clear glasses (d) warm water
- 23.🥄 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
- 24.🔍 Which is the odd one out? (a) chalk powder (b) food colour (c) sawdust (d) small pebbles
- 25.True or false: table salt does not dissolve in water. (a) True (b) False
- 26.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a mirror (b) a teaspoon (c) cold water (d) two clear glasses
- 27.🔍 Which is the odd one out? (a) cooking oil (b) chalk powder (c) baking soda (d) sand
- 28.True or false: sugar stirred well dissolves faster. (a) True (b) False
- 29.⚖️ 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
- 30.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
- 31.🧺 Do we need a comb for the dissolving test? (a) needed (b) not needed
- 32.🥄 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
- 33.🥄 Which of these dissolves in water? (a) chalk powder (b) sand (c) table salt (d) cooking oil
- 34.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we change it (b) we measure it (c) we keep it the same
- 35.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) sugar (c) a comb (d) a teaspoon
- 36.🥄 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
- 37.🥄 Which of these does not dissolve in water? (a) small pebbles (b) glucose powder (c) food colour (d) baking soda
- 38.🥄 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
- 39.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) two clear glasses (c) warm water (d) cotton wool
- 40.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the sugar turns to salt (b) the water turns solid (c) some stays undissolved (d) all of it dissolves
Answer key
- False
- sand
- True
- faster
- we keep it the same
- it settles at the bottom
- slower
- False
- chalk powder
- a grown-up
- needed
- a comb
- dissolves in water
- True
- False
- baking soda
- sugar
- two clear glasses
- sugar left unstirred
- the amount of water
- faster
- cotton wool
- particles move faster
- food colour
- False
- a mirror
- baking soda
- True
- we change it
- slower
- not needed
- dissolves in water
- table salt
- we keep it the same
- a comb
- does not dissolve
- small pebbles
- dissolves in water
- cotton wool
- some stays undissolved
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