Question

Identify the following as physical or chemical changes:

I) Metal cap of a jam bottle loosens when heated

tell physical or chemical changes

ii) Sugar is heated strongly

You are at the starting post of a 100m race and hear the pistol shot

i) What would you do?



ii) (dentify the stimulus and response.​

Answer 1

Answer:

1. physical

2. chemical

1. start the race

2. the quick action to run the race