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