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