Answer: An element is a pure substance. It can not easily be broken down into parts by physical means.
A)True
B)False
<u>The answer is true. </u>
Answer:
b
Explanation:
because it is moving so it has kinetic energy
B. False. An alpha particle is a Helium nucleus which has a mass of 4 as it is made from 2 neutrons and protons each with mass of +1.
Answer:
ice
Explanation:
uhh concrete has rougher surface