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.True or false: sugar is needed for the dissolving test. (a) True (b) False
- 2.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
- 3.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) neither of them (c) the sugar cube (d) powdered sugar
- 4.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) a mirror (c) a clock or timer (d) a magnet
- 5.True or false: glucose powder dissolves in water. (a) False (b) True
- 6.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the water temperature (b) the stirring (c) the amount of sugar (d) time to dissolve
- 7.🧺 Do we need a comb for the dissolving test? (a) needed (b) not needed
- 8.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed
- 9.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) a balloon (c) warm water (d) honey
- 10.⚖️ 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 keep it the same (c) we change it
- 11.True or false: powdered sugar dissolves faster. (a) False (b) True
- 12.⚖️ 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 measure it (c) we change it
- 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 measure it (b) we change it (c) we keep it the same
- 14.⚖️ 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) the amount of water (c) time to dissolve
- 15.True or false: sugar in icy water dissolves slower. (a) True (b) False
- 16.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) the same (b) not at all (c) faster (d) slower
- 17.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the stirring (b) the kind of sugar (c) the amount of water (d) the water temperature
- 18.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar left unstirred (c) sugar stirred well (d) sugar in warm water
- 19.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is kept the same. (a) True (b) False
- 20.True or false: sugar does not dissolve in water. (a) False (b) True
- 21.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is kept the same. (a) False (b) True
- 22.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we measure it (b) we keep it the same (c) we change it
- 23.🛟 Who should pour the warm water in the dissolving test? (a) a friend who is running (b) nobody needs to (c) a grown-up (d) the youngest child
- 24.🥄 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
- 25.⚖️ 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
- 26.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a clock or timer (c) cold water (d) a balloon
- 27.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) sugar (c) two clear glasses (d) cotton wool
- 28.🧺 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) warm water
- 29.🧺 Do we need cotton wool for the dissolving test? (a) not needed (b) needed
- 30.🥄 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
- 31.🥄 Which of these dissolves faster? (a) sugar stirred well (b) a big sugar cube (c) sugar left unstirred (d) sugar in icy water
- 32.True or false: sand dissolves in water. (a) False (b) True
- 33.🥄 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
- 34.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar in icy water (c) sugar left unstirred (d) powdered sugar
- 35.⚖️ 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) False (b) True
- 36.🥄 Which of these does not dissolve in water? (a) baking soda (b) glucose powder (c) food colour (d) sand
- 37.🔍 Which is the odd one out? (a) small pebbles (b) table salt (c) glucose powder (d) sugar
- 38.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) cold water (c) a mirror (d) two clear glasses
- 39.🧺 Which of these is needed for the dissolving test? (a) two clear glasses (b) a mirror (c) cotton wool (d) a comb
- 40.🧺 Which of these is not needed for the dissolving test? (a) honey (b) a clock or timer (c) two clear glasses (d) a teaspoon
Answer key
- True
- faster
- powdered sugar
- a clock or timer
- True
- time to dissolve
- not needed
- needed
- warm water
- we change it
- True
- we keep it the same
- we keep it the same
- the amount of water
- True
- faster
- the water temperature
- sugar left unstirred
- True
- False
- True
- we measure it
- a grown-up
- does not dissolve
- True
- a balloon
- cotton wool
- a comb
- not needed
- dissolves in water
- sugar stirred well
- False
- dissolves in water
- powdered sugar
- True
- sand
- small pebbles
- a mirror
- two clear glasses
- honey
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