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.🧺 Which of these is not needed for the dissolving test? (a) two clear glasses (b) a magnet (c) cold water (d) a teaspoon
- 2.⚖️ 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 water temperature (c) the amount of sugar (d) the amount of water
- 3.🧺 Which of these is not needed for the dissolving test? (a) warm water (b) a balloon (c) a teaspoon (d) cold water
- 4.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) sugar (c) honey (d) a comb
- 5.🧺 Do we need a clock or timer for the dissolving test? (a) not needed (b) needed
- 6.🥄 Which of these does not dissolve in water? (a) sawdust (b) glucose powder (c) table salt (d) sugar
- 7.🧺 Do we need honey for the dissolving test? (a) needed (b) not needed
- 8.⚖️ 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
- 9.🥄 Which of these dissolves slower? (a) sugar left unstirred (b) sugar in warm water (c) powdered sugar (d) sugar stirred well
- 10.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we change it (b) we keep it the same (c) we measure it
- 11.⚖️ 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
- 12.🥄 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
- 13.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) sugar in icy water (c) a big sugar cube (d) sugar in warm water
- 14.🔍 Which is the odd one out? (a) food colour (b) sugar (c) table salt (d) chalk powder
- 15.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar in icy water (c) sugar left unstirred (d) sugar stirred well
- 16.🥄 Does powdered sugar dissolve faster or slower? (a) slower (b) faster
- 17.True or false: chalk powder dissolves in water. (a) False (b) True
- 18.True or false: a mirror is needed for the dissolving test. (a) False (b) True
- 19.🥄 Which of these dissolves slower? (a) sugar stirred well (b) powdered sugar (c) sugar in warm water (d) a big sugar cube
- 20.True or false: a mirror is not needed for the dissolving test. (a) True (b) False
- 21.🧺 Do we need sugar for the dissolving test? (a) not needed (b) needed
- 22.True or false: a teaspoon is needed for the dissolving test. (a) True (b) False
- 23.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) slower (b) faster (c) not at all (d) the same
- 24.🥄 Which of these does not dissolve in water? (a) table salt (b) small pebbles (c) glucose powder (d) baking soda
- 25.🥄 Why does sugar dissolve faster in warm water? (a) warm water is thicker (b) cold water is wet (c) particles move faster (d) sugar likes the dark
- 26.🥄 Which of these dissolves in water? (a) cooking oil (b) glucose powder (c) sand (d) small pebbles
- 27.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) time to dissolve (b) the stirring (c) the water temperature
- 28.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
- 29.🥄 Which of these dissolves in water? (a) cooking oil (b) small pebbles (c) chalk powder (d) table salt
- 30.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) warm water (c) two clear glasses (d) a magnet
- 31.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we change it (b) we keep it the same (c) we measure it
- 32.⚖️ 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
- 33.🔍 Which is the odd one out? (a) baking soda (b) chalk powder (c) sand (d) cooking oil
- 34.🥄 Which of these dissolves in water? (a) food colour (b) sand (c) cooking oil (d) sawdust
- 35.🔍 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
- 36.🥄 Which of these dissolves faster? (a) powdered sugar (b) sugar left unstirred (c) sugar in icy water (d) a big sugar cube
- 37.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
- 38.🥄 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
- 39.🥄 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
- 40.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it became air (b) it vanished for ever (c) it sank as sand (d) it spread in the water
Answer key
- a magnet
- the water temperature
- a balloon
- sugar
- needed
- sawdust
- not needed
- we keep it the same
- sugar left unstirred
- we measure it
- we keep it the same
- dissolves in water
- sugar in warm water
- chalk powder
- sugar stirred well
- faster
- False
- False
- a big sugar cube
- True
- needed
- True
- faster
- small pebbles
- particles move faster
- glucose powder
- the stirring
- a grown-up
- table salt
- a magnet
- we keep it the same
- False
- baking soda
- food colour
- it settles at the bottom
- powdered sugar
- slower
- does not dissolve
- does not dissolve
- it spread in the water
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