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: powdered sugar dissolves slower. (a) False (b) True
- 2.🥄 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
- 3.⚖️ 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
- 4.True or false: cold water is not needed for the dissolving test. (a) False (b) True
- 5.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a mirror (b) a teaspoon (c) two clear glasses (d) sugar
- 6.True or false: two clear glasses is not needed for the dissolving test. (a) True (b) False
- 7.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) cold water (c) a magnet (d) a teaspoon
- 8.True or false: warm water is not needed for the dissolving test. (a) False (b) True
- 9.True or false: sugar does not dissolve in water. (a) False (b) True
- 10.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we change it (b) we measure it (c) we keep it the same
- 11.🥄 Which of these dissolves in water? (a) chalk powder (b) food colour (c) sand (d) small pebbles
- 12.True or false: sawdust dissolves in water. (a) True (b) False
- 13.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) warm water (c) honey (d) two clear glasses
- 14.🧺 Do we need a teaspoon for the dissolving test? (a) needed (b) not needed
- 15.🥄 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
- 16.🥄 Which of these does not dissolve in water? (a) food colour (b) cooking oil (c) glucose powder (d) table salt
- 17.🥄 Which of these dissolves faster? (a) sugar in icy water (b) sugar in warm water (c) a big sugar cube (d) sugar left unstirred
- 18.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a clock or timer (c) a comb (d) cold water
- 19.🔍 Which is the odd one out? (a) cooking oil (b) sand (c) sawdust (d) glucose powder
- 20.🧺 Do we need a mirror for the dissolving test? (a) not needed (b) needed
- 21.🥄 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
- 22.True or false: food colour does not dissolve in water. (a) False (b) True
- 23.🧺 Do we need a comb for the dissolving test? (a) needed (b) not needed
- 24.🔍 Which is the odd one out? (a) sawdust (b) sand (c) chalk powder (d) food colour
- 25.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) the sugar cube (c) both the same (d) powdered sugar
- 26.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) cotton wool (c) a clock or timer (d) a comb
- 27.True or false: sugar is not needed for the dissolving test. (a) True (b) False
- 28.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) a clock or timer (c) honey (d) warm water
- 29.🥄 Which of these dissolves slower? (a) sugar in icy water (b) sugar in warm water (c) sugar stirred well (d) powdered sugar
- 30.🥄 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
- 31.⚖️ 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) time to dissolve (d) the water temperature
- 32.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) poke it with a finger (c) taste it (d) look for leftover grains
- 33.⚖️ 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) True (b) False
- 34.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it became air (b) it spread in the water (c) it vanished for ever (d) it sank as sand
- 35.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is kept the same. (a) True (b) False
- 36.🥄 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
- 37.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
- 38.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed
- 39.⚖️ 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
- 40.📘 What do we call water with sugar dissolved in it? (a) a rainbow (b) a crystal (c) a solution (d) a magnet
Answer key
- False
- dissolves in water
- we measure it
- False
- a mirror
- False
- a magnet
- False
- False
- we keep it the same
- food colour
- False
- honey
- needed
- does not dissolve
- cooking oil
- sugar in warm water
- a comb
- glucose powder
- not needed
- does not dissolve
- False
- not needed
- food colour
- powdered sugar
- a clock or timer
- False
- honey
- sugar in icy water
- particles move faster
- the water temperature
- look for leftover grains
- False
- it spread in the water
- False
- dissolves in water
- faster
- needed
- we keep it the same
- a solution
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