Answer:
A. Atoms are the smallest unit of an element.
Explanation:
The correct statement from the given choices is that atoms are the smallest unit of an element.
Atoms are the smallest particles that takes part in chemical reactions and they are made up of protons, neutrons and electrons.
- Elements are distinct substances that cannot be split up into simpler substances.
- They are made up of only one kind of atoms.
- Elements are not changed into atoms by chemical reactions.
- In chemical reactions, atoms simply recombine.
Answer: 
Explanation:
In this case we are talking about the centripetal acceleration 
, which can be calculated by:
Where:
is the speed of the motorcycle
is the radius of the path the motorcycle is going around
Solving:
Finally:
Answer:
you forgot to attach the image
Density is mass over volume. Density is also a charecteristic property wich defines a substance and two different substance cant have the same charasteristic property.
<span>The kinetic energy of gas molecules is directly proportional to the Kelvin temperature of the gas</span>
