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.
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- 1.🔮 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
- 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.True or false: honey is not needed for the dissolving test. (a) False (b) True
- 4.🥄 Which of these does not dissolve in water? (a) baking soda (b) sawdust (c) sugar (d) glucose powder
- 5.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) all of it dissolves (b) the water turns solid (c) the sugar turns to salt (d) some stays undissolved
- 6.True or false: sugar is not needed for the dissolving test. (a) True (b) False
- 7.🥄 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
- 8.⚖️ 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 measure it (c) we change it
- 9.🥄 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
- 10.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the kind of sugar (b) the stirring (c) the water temperature (d) the amount of water
- 11.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) warm water (c) a comb (d) two clear glasses
- 12.True or false: powdered sugar dissolves faster. (a) True (b) False
- 13.⚖️ 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 measure it (c) we change it
- 14.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is what we measure. (a) True (b) False
- 15.🥄 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
- 16.🥄 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
- 17.True or false: cold water is not needed for the dissolving test. (a) True (b) False
- 18.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) not at all (b) the same (c) faster (d) slower
- 19.True or false: two clear glasses is needed for the dissolving test. (a) False (b) True
- 20.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a balloon (b) a clock or timer (c) two clear glasses (d) sugar
- 21.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) honey (c) a magnet (d) a teaspoon
- 22.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the amount of water (b) time to dissolve (c) the stirring (d) the amount of sugar
- 23.True or false: small pebbles does not dissolve in water. (a) False (b) True
- 24.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) sugar (c) a clock or timer (d) a magnet
- 25.⚖️ 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
- 26.⚖️ 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
- 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.🥄 Which of these dissolves faster? (a) sugar in icy water (b) powdered sugar (c) a big sugar cube (d) sugar left unstirred
- 29.True or false: sugar is needed for the dissolving test. (a) False (b) True
- 30.🥄 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
- 31.True or false: warm water is needed for the dissolving test. (a) True (b) False
- 32.🥄 Does sugar in icy water dissolve faster or slower? (a) slower (b) faster
- 33.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) warm water (c) a teaspoon (d) honey
- 34.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is the one thing we change. (a) True (b) False
- 35.🔍 Which is the odd one out? (a) food colour (b) table salt (c) cooking oil (d) baking soda
- 36.True or false: sugar in icy water dissolves slower. (a) False (b) True
- 37.🥄 Which of these does not dissolve in water? (a) baking soda (b) chalk powder (c) glucose powder (d) food colour
- 38.True or false: food colour dissolves in water. (a) False (b) True
- 39.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) sugar (c) cotton wool (d) a teaspoon
- 40.📘 What do we call water with sugar dissolved in it? (a) a rainbow (b) a solution (c) a crystal (d) a magnet
Answer key
- powdered sugar
- False
- True
- sawdust
- some stays undissolved
- False
- dissolves in water
- we measure it
- particles move faster
- the water temperature
- a comb
- True
- we keep it the same
- False
- does not dissolve
- does not dissolve
- False
- faster
- True
- a balloon
- a teaspoon
- time to dissolve
- True
- a magnet
- we keep it the same
- we keep it the same
- we keep it the same
- powdered sugar
- True
- dissolves in water
- True
- slower
- honey
- False
- cooking oil
- True
- chalk powder
- True
- cotton wool
- a solution
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