- Water freezes: physical
- Mixture produces a precipitate: chemical
- Firework explodes: chemical
- Cloud formation: physical
- Frost formation: physical
- Iron rusts: chemical
- Leaves change color: chemical
- Photosynthesis: chemical
- Fog formation: physical
- Burning of diesel fuel: chemical
- A stick of butter melts: physical
- Acid rain corrodes a statue: chemical
- Urine production: chemical
- Dew forms on grass: physical
- Milk turns sour: chemical
- Cup of coffee cools: physical
- Sugar cube dissolves in water: physical
- Aerobic respiration: chemical
- Ice evaporates in a freezer: physical
- Akla-Seltzer tablet sizzles: chemical
- Fire produces smoke: chemical
- Water boils: physical
- Reaction has foul smell: chemical
- Wood is sanded: physical
- Silver tarnishes: chemical
- Bread making: chemical
- Burning of coal: chemical
- Digestion of food: chemical
- Pond dries up: physical
- Acid-base reaction: chemical
- Bacterial fermentation: chemical
- Mixture releases heat: chemical
- Lamp turned on: physical
- A jet roars overhead: physical
- Bleach stains a shirt: chemical
- Fruit ripens: chemical
Parent Tip: Review the logic above to help your child master the concept of worksheet physical and chemical changes.