Question $1$

Which one of the following is an example of an endothermic process?

Cold juice warms to room temperature after it is removed from the refrigerator.

Hot coffee cools to room temperature.

Liquid water freezes when placed in a freezer.

Two liquids at $25\mathrm{.}5C$ are mixed and the temperature remains the same.

A hot$-$pack given by a doctor is activated and becomes warm to the touch.

Question $2$

Which of the following is not part of the scientific method?

Explanation

Theory

Law

Observation