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? Which of these is the one thing we change? (a) the amount of water (b) the kind of sugar (c) the water temperature (d) the amount of sugar
- 2.🥄 Does powdered sugar dissolve faster or slower? (a) faster (b) slower
- 3.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the water turns solid (b) all of it dissolves (c) the sugar turns to salt (d) some stays undissolved
- 4.🧺 Do we need cotton wool for the dissolving test? (a) needed (b) not needed
- 5.True or false: cotton wool is needed for the dissolving test. (a) True (b) False
- 6.🧺 Do we need a comb for the dissolving test? (a) needed (b) not needed
- 7.🧺 Which of these is needed for the dissolving test? (a) cold water (b) cotton wool (c) honey (d) a magnet
- 8.True or false: sawdust dissolves in water. (a) False (b) True
- 9.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) both the same (c) neither of them (d) powdered sugar
- 10.True or false: a teaspoon is needed for the dissolving test. (a) False (b) True
- 11.🥄 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
- 12.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is kept the same. (a) False (b) True
- 13.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar in icy water (c) powdered sugar (d) sugar left unstirred
- 14.🔍 Which is the odd one out? (a) baking soda (b) sugar (c) cooking oil (d) table salt
- 15.⚖️ 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
- 16.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) slower (b) faster (c) the same (d) not at all
- 17.⚖️ 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
- 18.🧺 Do we need honey for the dissolving test? (a) not needed (b) needed
- 19.🥄 Which of these dissolves in water? (a) sand (b) small pebbles (c) baking soda (d) chalk powder
- 20.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a mirror (b) warm water (c) cold water (d) a clock or timer
- 21.True or false: powdered sugar dissolves slower. (a) True (b) False
- 22.⚖️ 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) True (b) False
- 23.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a comb (b) a teaspoon (c) sugar (d) a clock or timer
- 24.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
- 25.True or false: sugar left unstirred dissolves faster. (a) True (b) False
- 26.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) a magnet (c) a balloon (d) a teaspoon
- 27.🔍 How can you get the salt back from salty water? (a) add more water (b) stir it more (c) let the water evaporate (d) keep it in a fridge
- 28.🥄 Which of these dissolves slower? (a) sugar in warm water (b) a big sugar cube (c) sugar stirred well (d) powdered sugar
- 29.🧺 Which of these is not needed for the dissolving test? (a) two clear glasses (b) a teaspoon (c) a clock or timer (d) a magnet
- 30.🥄 Which of these does not dissolve in water? (a) small pebbles (b) food colour (c) table salt (d) glucose powder
- 31.🥄 Which of these dissolves in water? (a) sawdust (b) cooking oil (c) chalk powder (d) sugar
- 32.⚖️ 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) False (b) True
- 33.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) honey (c) sugar (d) warm water
- 34.⚖️ 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 kind of sugar (c) time to dissolve
- 35.🥄 Which of these dissolves slower? (a) sugar in icy water (b) sugar in warm water (c) sugar stirred well (d) powdered sugar
- 36.True or false: a comb is needed for the dissolving test. (a) False (b) True
- 37.True or false: a big sugar cube dissolves slower. (a) True (b) False
- 38.⚖️ 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
- 39.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) cotton wool (c) honey (d) sugar
- 40.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
Answer key
- the water temperature
- faster
- some stays undissolved
- not needed
- False
- not needed
- cold water
- False
- powdered sugar
- True
- does not dissolve
- True
- powdered sugar
- cooking oil
- False
- faster
- the amount of water
- not needed
- baking soda
- a mirror
- False
- False
- a comb
- faster
- False
- a teaspoon
- let the water evaporate
- a big sugar cube
- a magnet
- small pebbles
- sugar
- False
- honey
- the kind of sugar
- sugar in icy water
- False
- True
- False
- sugar
- needed
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