Help me please 1) What is an atomic model?

2) What is called atomic number and mass number?

3) What is called an element?​

1.what is an atomic model ?

= A smallest particle of an element that can take part in chemical reaction without division is known as atomic model .

2. What is called atomic number and mass number?

=The total number of protons present in the nucleus of an atom is known as atomic number .

=The mass number of an atomic number is amu.

3. What is called an element?

=An element is the simplest pure form of a substance which cannot be split up into other simpler substance by any chemical method.

a boiling water reactor does not boil the water. a pressurized water reactor boils the water faster. a pressurized water reactor is heated directly by the core. a pressurized water reactor does not use fission.