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.🥄 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
- 2.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) not at all (b) slower (c) the same (d) faster
- 3.⚖️ 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) time to dissolve (c) the stirring (d) the amount of water
- 4.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a balloon (b) sugar (c) a clock or timer (d) a teaspoon
- 5.🥄 Which of these does not dissolve in water? (a) table salt (b) chalk powder (c) glucose powder (d) sugar
- 6.🥄 Which of these dissolves slower? (a) sugar in warm water (b) sugar stirred well (c) sugar left unstirred (d) powdered sugar
- 7.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) two clear glasses (c) a teaspoon (d) cotton wool
- 8.⚖️ 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 water temperature (c) time to dissolve (d) the kind of sugar
- 9.🥄 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
- 10.🧺 Do we need a teaspoon for the dissolving test? (a) not needed (b) needed
- 11.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) warm water (c) a magnet (d) a teaspoon
- 12.🥄 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
- 13.🥄 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
- 14.True or false: sugar in icy water dissolves faster. (a) False (b) True
- 15.True or false: warm water is needed for the dissolving test. (a) False (b) True
- 16.True or false: two clear glasses is needed for the dissolving test. (a) True (b) False
- 17.⚖️ 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 keep it the same (c) we measure it
- 18.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
- 19.🥄 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
- 20.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) honey (c) a teaspoon (d) a clock or timer
- 21.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is what we measure. (a) False (b) True
- 22.🧺 Which of these is not needed for the dissolving test? (a) a clock or timer (b) a teaspoon (c) warm water (d) a comb
- 23.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
- 24.⚖️ 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
- 25.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar stirred well (c) sugar in icy water (d) sugar in warm water
- 26.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) taste it (c) smell it closely (d) look for leftover grains
- 27.🥄 Which of these dissolves in water? (a) cooking oil (b) chalk powder (c) table salt (d) sand
- 28.⚖️ 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
- 29.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) powdered sugar (c) both the same (d) neither of them
- 30.True or false: sugar left unstirred dissolves faster. (a) False (b) True
- 31.🧺 Which of these is needed for the dissolving test? (a) honey (b) a mirror (c) a magnet (d) a teaspoon
- 32.⚖️ 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 change it (c) we measure it
- 33.🧺 Do we need honey for the dissolving test? (a) needed (b) not needed
- 34.🔍 Sand is stirred into water. What do you see after a while? (a) it floats up (b) it dissolves (c) it turns blue (d) it settles at the bottom
- 35.🥄 Why does sugar dissolve faster in warm water? (a) particles move faster (b) warm water is thicker (c) sugar likes the dark (d) cold water is wet
- 36.🔍 Which is the odd one out? (a) chalk powder (b) table salt (c) sawdust (d) small pebbles
- 37.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar in icy water (c) powdered sugar (d) sugar left unstirred
- 38.True or false: sawdust dissolves in water. (a) True (b) False
- 39.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is what we measure. (a) False (b) True
- 40.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is what we measure. (a) False (b) True
Answer key
- dissolves in water
- faster
- time to dissolve
- a balloon
- chalk powder
- sugar left unstirred
- cotton wool
- the water temperature
- does not dissolve
- needed
- a magnet
- does not dissolve
- does not dissolve
- False
- True
- True
- we keep it the same
- slower
- dissolves in water
- honey
- False
- a comb
- slower
- False
- sugar in icy water
- look for leftover grains
- table salt
- False
- powdered sugar
- False
- a teaspoon
- we keep it the same
- not needed
- it settles at the bottom
- particles move faster
- table salt
- powdered sugar
- False
- True
- False
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