What topic is this ???????????
The answer would be condensation. In the other answer choices you're giving an action that would change the temperature. (eg. Melting, Heating, Cooling).
Answer:
Substance A
Explanation:
A substance that has a higher density than water will sink in water, while that with a lower density than water will float on water.
Substance A, with a lower density of 0.98 g/ml as compared to that of water (1.0 g/ml) will thus float in water.
<u>What is density?</u>
Density is defined as the amount of substance per unit volume. The concept of density is usually one of comparison, which means whether a substance with a particular density value will sink or float will depend on the fluid's density it is placed in.
A higher density means that the substance has a higher mass per unit volume, so it's "heavier" and will thus sink.
<u>Formula</u>
To learn more about density, check out: brainly.com/question/9149928
Answer:
B. The region outside a nucleus where the electron is moving
Explanation:
The more the electron moves, the higher energy level it has, the slower the electron moves the lowwer energy level it has.