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