1) You notice that when you take an ice cube out of the freezer, it slowly turns into water. Is this a physical or chemical change? a) chemical change b) physical change 2) Your friend mixed some baking soda and vinegar, and it started fizzing! Is this a physical or chemical change? a) chemical change b) physical change 3) You break a piece of chalk into smaller pieces. Is this a physical or chemical change? a) chemical change b) physical change 4) Your mom lit a match, and it started burning. Is this a physical or chemical change? a) Physical change b) chemical change 5) You crumpled a piece of paper. Is this a physical or chemical change? a) physical change b) chemical change 6) Perform this action: Tear a piece of paper into two halves. Was this a physical or chemical change? a) Physical change b) Chemical change 7) Mix these two powders (e.g., baking soda and citric acid) and observe what happens. Is this a physical or chemical change? a) physical change b) chemical change 8) Use modeling clay to change the shape of a ball into a snake. Is this a physical or chemical change? Give me 20 other challenges like these a) chemical change b) physical change 9) Cut an apple into slices. Is this a physical or chemical change? a) chemical change b) physical change 10) Dissolve some sugar in water. Is this a physical or chemical change? a) physical change b) chemical change 11) Observe an iron nail rusting over time. Is this a physical or chemical change? a) chemical change b) physical change 12) Bake a cake. Is this a physical or chemical change? a) physical change b) chemical change 13) Boil some water. Is this a physical or chemical change? a) chemical change b) physical change 14) Freeze some water into ice cubes. Is this a physical or chemical change? a) physical change b) chemical change 15) Melt a candle. Is this a physical or chemical change? a) chemical change b) physical change 16) Observe milk souring over time. Is this a physical or chemical change? a) physical change b) chemical change 17) Observe photosynthesis in a plant. Is this a physical or chemical change? a) chemical change b) physical change 18) Observe digestion of food in the body. Is this a physical or chemical change? a) physical change b) chemical change 19) Burn a piece of wood. Is this a physical or chemical change? a) physical change b) chemical change 20) Observe water evaporating. Is this a physical or chemical change? a) chemical change b) physical change
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