Answer: Energy exists if there is work and power is the measure of work done in unit time.
Explanation: Energy is defined as the ability to do work so that work equals to change in kinetic energy or change in potential energy which are two types of the mechanical energy of a moving object. Power is the rate of work done. In the other words power is the work done in a unit time.
Answer:
B. change
Explanation:
In a chemical reaction, the bonds in the molecules break apart and form new ones, thus b is the correct answer because they change.
It would be the first one and the third one
Answer:
1).atoms (3). mixture. (5). Element
2). particles (4). molecules (6). suspension
Explanation:
(7). Homogeneous (8). Heterogeneous
(9). compound (10). solutions
