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 water temperature”? (a) we measure it (b) we change it (c) we keep it the same
- 2.🥄 Which of these dissolves in water? (a) sawdust (b) sugar (c) sand (d) cooking oil
- 3.True or false: a magnet is not needed for the dissolving test. (a) True (b) False
- 4.🧺 Which of these is not needed for the dissolving test? (a) two clear glasses (b) a comb (c) cold water (d) a clock or timer
- 5.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) a grown-up (c) a friend who is running (d) nobody needs to
- 6.True or false: small pebbles does not dissolve in water. (a) True (b) False
- 7.📘 What do we call water with sugar dissolved in it? (a) a crystal (b) a rainbow (c) a solution (d) a magnet
- 8.⚖️ 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
- 9.🥄 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
- 10.🧺 Do we need honey 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 balloon (b) a teaspoon (c) a clock or timer (d) two clear glasses
- 12.🧺 Do we need sugar for the dissolving test? (a) not needed (b) needed
- 13.🥄 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
- 14.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) sugar (c) cold water (d) a mirror
- 15.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) sugar (c) two clear glasses (d) a magnet
- 16.🥄 Does powdered sugar dissolve faster or slower? (a) faster (b) slower
- 17.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar in icy water (c) sugar in warm water (d) sugar stirred well
- 18.🥄 Why does sugar dissolve faster in warm water? (a) particles move faster (b) cold water is wet (c) warm water is thicker (d) sugar likes the dark
- 19.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a teaspoon (c) warm water (d) cotton wool
- 20.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) the sugar cube (c) powdered sugar (d) neither of them
- 21.🛟 How should you check if the sugar has dissolved? (a) taste it (b) smell it closely (c) poke it with a finger (d) look for leftover grains
- 22.True or false: a clock or timer is needed for the dissolving test. (a) False (b) True
- 23.True or false: a big sugar cube dissolves faster. (a) True (b) False
- 24.🧺 Do we need a teaspoon for the dissolving test? (a) needed (b) not needed
- 25.🔍 Which is the odd one out? (a) sawdust (b) cooking oil (c) table salt (d) sand
- 26.True or false: a comb is needed for the dissolving test. (a) False (b) True
- 27.⚖️ 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 kind of sugar (c) the amount of sugar (d) the water temperature
- 28.True or false: powdered sugar dissolves faster. (a) False (b) True
- 29.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) a magnet (c) honey (d) sugar
- 30.🧺 Do we need a comb for the dissolving test? (a) needed (b) not needed
- 31.True or false: a big sugar cube dissolves slower. (a) False (b) True
- 32.🥄 Which of these does not dissolve in water? (a) baking soda (b) glucose powder (c) sawdust (d) food colour
- 33.True or false: sugar is not needed for the dissolving test. (a) True (b) False
- 34.True or false: two clear glasses is needed for the dissolving test. (a) True (b) False
- 35.🔍 How can you get the salt back from salty water? (a) let the water evaporate (b) stir it more (c) add more water (d) keep it in a fridge
- 36.🔍 Which is the odd one out? (a) chalk powder (b) baking soda (c) food colour (d) table salt
- 37.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) all of it dissolves (b) the sugar turns to salt (c) the water turns solid (d) some stays undissolved
- 38.🔍 Which is the odd one out? (a) glucose powder (b) food colour (c) baking soda (d) cooking oil
- 39.🥄 Which of these does not dissolve in water? (a) food colour (b) table salt (c) sugar (d) small pebbles
- 40.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is the one thing we change. (a) True (b) False
Answer key
- we change it
- sugar
- True
- a comb
- a grown-up
- True
- a solution
- we keep it the same
- does not dissolve
- not needed
- a balloon
- needed
- does not dissolve
- a mirror
- a magnet
- faster
- sugar in icy water
- particles move faster
- cotton wool
- powdered sugar
- look for leftover grains
- True
- False
- needed
- table salt
- False
- the water temperature
- True
- sugar
- not needed
- True
- sawdust
- False
- True
- let the water evaporate
- chalk powder
- some stays undissolved
- cooking oil
- small pebbles
- False
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