7. In which caso does a chernical change occur? A cooking rics C. melting crayon B. evaporating alcohol D. wetting a towel 8. When this is added to a substance the molecules and atoms vibrate faster causing the material to burn. A forco B, heat C. inertia D. mass 9. What will happen when a little amount of water eventually disappears? A condenses B. evaporates C. freezes D. melts 10. What chemical reaction may take place when an object burns? A cornbustion B. corrosion C. evaporation D. sublimation
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Answer:
c. melting rice
a force
b.evaporate