The answer is b
Protons and neutrons are both in the nucleus
Electrons are outside the nucleus
Answer:
Explanation:
A marble is not a very large object, so a smaller graduated cylinder is a better choice. A 100 milliliter graduated cylinder is not needed to measure the volume of a small marble, so a 25 milliliter graduated cylinder is the best option.
Answer:
c. it involves a series of steps, each of which generates a reactive intermediate that brings about the next step
Explanation:
A chain reaction consist of many repeating steps. Chain reaction will never stop until all the reactant has been exhausted. It is more of a cycle of reaction that generate a reactive intermediate that brings about the next step.
Example of a chain reaction is the chlorination of methane.
CH4 + Cl2 ↔ CH3Cl + HCl
CH3Cl + Cl2 ↔ CH2Cl2 + HCl
CH2Cl2 + Cl2 ↔ CHCl3 + HCl
CHCl3 + Cl2 ↔ CCl4 + HCl
Answer:
The lanthanides and the actinides at the bottom of the table are sometimes known as the inner transition metals because they have atomic numbers that fall between the first and second elements in the last two rows of the transition metals
Answer:
I think it both physical & chemical change :')
