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.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
- 2.🧺 Which of these is not needed for the dissolving test? (a) warm water (b) cold water (c) cotton wool (d) sugar
- 3.True or false: baking soda does not dissolve in water. (a) False (b) True
- 4.True or false: sugar is needed for the dissolving test. (a) True (b) False
- 5.True or false: two clear glasses is not needed for the dissolving test. (a) False (b) True
- 6.🥄 Why does sugar dissolve faster in warm water? (a) cold water is wet (b) sugar likes the dark (c) warm water is thicker (d) particles move faster
- 7.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) honey (c) cold water (d) a magnet
- 8.🔮 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
- 9.🥄 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
- 10.📘 What do we call water with sugar dissolved in it? (a) a crystal (b) a solution (c) a magnet (d) a rainbow
- 11.True or false: a balloon is needed for the dissolving test. (a) False (b) True
- 12.🔍 How can you get the salt back from salty water? (a) let the water evaporate (b) add more water (c) keep it in a fridge (d) stir it more
- 13.⚖️ 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
- 14.🥄 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
- 15.True or false: two clear glasses is needed for the dissolving test. (a) False (b) True
- 16.⚖️ 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 sugar (b) the kind of sugar (c) time to dissolve (d) the water temperature
- 17.🧺 Which of these is not needed for the dissolving test? (a) warm water (b) honey (c) two clear glasses (d) a teaspoon
- 18.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
- 19.True or false: cotton wool is not needed for the dissolving test. (a) True (b) False
- 20.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) sugar (c) a balloon (d) warm water
- 21.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is kept the same. (a) False (b) True
- 22.🥄 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
- 23.🧺 Which of these is needed for the dissolving test? (a) honey (b) a balloon (c) a magnet (d) a teaspoon
- 24.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a magnet (c) warm water (d) a teaspoon
- 25.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) look for leftover grains (c) smell it closely (d) taste it
- 26.🧺 Do we need a clock or timer for the dissolving test? (a) needed (b) not needed
- 27.🥄 Which of these dissolves in water? (a) table salt (b) chalk powder (c) sand (d) sawdust
- 28.🧺 Do we need warm water for the dissolving test? (a) needed (b) not needed
- 29.🧺 Do we need honey for the dissolving test? (a) needed (b) not needed
- 30.True or false: sugar left unstirred dissolves slower. (a) False (b) True
- 31.🧺 Do we need sugar for the dissolving test? (a) needed (b) not needed
- 32.🥄 Which of these dissolves slower? (a) sugar stirred well (b) sugar in warm water (c) sugar left unstirred (d) powdered sugar
- 33.🧺 Do we need cold water for the dissolving test? (a) not needed (b) needed
- 34.🔍 Which is the odd one out? (a) small pebbles (b) cooking oil (c) sugar (d) chalk powder
- 35.🥄 Which of these dissolves slower? (a) sugar stirred well (b) powdered sugar (c) sugar in warm water (d) sugar in icy water
- 36.⚖️ 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
- 37.🥄 Which of these dissolves faster? (a) a big sugar cube (b) powdered sugar (c) sugar left unstirred (d) sugar in icy water
- 38.🔍 Which is the odd one out? (a) small pebbles (b) table salt (c) sugar (d) glucose powder
- 39.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we keep it the same (b) we measure it (c) we change it
- 40.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
Answer key
- a grown-up
- cotton wool
- False
- True
- False
- particles move faster
- cold water
- powdered sugar
- does not dissolve
- a solution
- False
- let the water evaporate
- False
- does not dissolve
- True
- the water temperature
- honey
- faster
- True
- a balloon
- True
- dissolves in water
- a teaspoon
- a magnet
- look for leftover grains
- needed
- table salt
- needed
- not needed
- True
- needed
- sugar left unstirred
- needed
- sugar
- sugar in icy water
- False
- powdered sugar
- small pebbles
- we change it
- slower
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