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