Matter Diffusion Evaporation Experiments
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Matter Diffusion Evaporation Experiments
Experiment 1: Food colouring spreads
Isla added one drop of blue food colouring to a clear glass of still, cool water. She did not stir it. After 10 minutes, the colour had spread through most of the glass. The water was the same temperature throughout the test.
- The colouring particles diffused from where they were concentrated into areas with less colouring.
- The colouring evaporated and turned into blue gas.
- The water particles changed into colouring particles.
Experiment 2: Water evaporates
At the market, Zoe placed equal amounts of water in two identical shallow dishes. She left one dish in a warm, breezy place and the other in a cool, sheltered place. She measured the remaining water after four hours.
Dish
Water remaining
Warm, breezy place
35 mL
Cool, sheltered place
70 mL
2 printable pages
Page 1
Page 2
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