Which of the following can be observed without changing the chemical makeup of a substance? A. rusting
B. burning
C. any chemical property
D. any physical property

D. Any physical property

Explanation:

Physical properties are properties that can be measured or observed without changing the chemical nature of the substance. Some examples of physical properties are: color (intensive) density (intensive)

for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

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