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