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? Which of these is the one thing we change? (a) the water temperature (b) the amount of sugar (c) the stirring (d) the amount of water
- 2.🧺 Do we need a mirror for the dissolving test? (a) needed (b) not needed
- 3.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) a teaspoon (c) a magnet (d) warm water
- 4.⚖️ 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 keep it the same (c) we measure it
- 5.🥄 Which of these dissolves in water? (a) sugar (b) sand (c) small pebbles (d) chalk powder
- 6.🧺 Which of these is not needed for the dissolving test? (a) warm water (b) a teaspoon (c) a mirror (d) a clock or timer
- 7.True or false: honey is needed for the dissolving test. (a) False (b) True
- 8.🧺 Do we need a magnet for the dissolving test? (a) not needed (b) needed
- 9.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is kept the same. (a) True (b) False
- 10.True or false: cotton wool is needed for the dissolving test. (a) True (b) False
- 11.True or false: warm water is needed for the dissolving test. (a) False (b) True
- 12.🔍 Which is the odd one out? (a) food colour (b) glucose powder (c) table salt (d) sawdust
- 13.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we keep it the same (b) we change it (c) we measure it
- 14.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) a comb (c) sugar (d) a teaspoon
- 15.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) both the same (c) the sugar cube (d) powdered sugar
- 16.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) not at all (c) the same (d) slower
- 17.🥄 Does powdered sugar dissolve faster or slower? (a) slower (b) faster
- 18.🧺 Which of these is not needed for the dissolving test? (a) cotton wool (b) warm water (c) sugar (d) two clear glasses
- 19.True or false: a magnet is needed for the dissolving test. (a) False (b) True
- 20.True or false: sugar left unstirred dissolves faster. (a) False (b) True
- 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.🥄 Which of these dissolves faster? (a) powdered sugar (b) sugar left unstirred (c) a big sugar cube (d) sugar in icy water
- 23.🥄 Why does sugar dissolve faster in warm water? (a) sugar likes the dark (b) warm water is thicker (c) particles move faster (d) cold water is wet
- 24.🧺 Do we need sugar for the dissolving test? (a) not needed (b) needed
- 25.True or false: sugar does not dissolve in water. (a) False (b) True
- 26.🥄 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
- 27.🥄 Which of these does not dissolve in water? (a) baking soda (b) sugar (c) small pebbles (d) table salt
- 28.🧺 Do we need two clear glasses for the dissolving test? (a) needed (b) not needed
- 29.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) a magnet (c) a mirror (d) sugar
- 30.🧺 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) a balloon
- 31.True or false: sugar in warm water dissolves slower. (a) False (b) True
- 32.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
- 33.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is kept the same. (a) False (b) True
- 34.True or false: small pebbles dissolves in water. (a) True (b) False
- 35.🧺 Do we need a clock or timer for the dissolving test? (a) not needed (b) needed
- 36.🧺 Do we need a balloon for the dissolving test? (a) not needed (b) needed
- 37.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
- 38.🥄 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
- 39.🥄 Which of these dissolves slower? (a) sugar in icy water (b) sugar stirred well (c) powdered sugar (d) sugar in warm water
- 40.True or false: chalk powder dissolves in water. (a) True (b) False
Answer key
- the water temperature
- not needed
- a magnet
- we change it
- sugar
- a mirror
- False
- not needed
- True
- False
- True
- sawdust
- we keep it the same
- a comb
- powdered sugar
- faster
- faster
- cotton wool
- False
- False
- look for leftover grains
- powdered sugar
- particles move faster
- needed
- False
- does not dissolve
- small pebbles
- needed
- sugar
- a balloon
- False
- slower
- True
- False
- needed
- not needed
- a grown-up
- does not dissolve
- sugar in icy water
- False
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