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