chem .1

Question 1

what are atoms made up of?

Answer 1

atoms are made up of protons, neutrons and electrons neutrons are the heaviest electrons are the lightest protons are positive and electrons are negative

Question 2

what is an atomic number?

Answer 2

The atomic number is the number of protons in the nucleus of an atom The heavier an atom is the more unstable and the more radio active is

Question 3

What is the perodic table?

Answer 3

The periodic table is a list of all known elements they are is order of increasing atomic numbers they are in rows which are called periods and columns called groups

Question 4

what are alkaline metals?

Answer 4

The alkaline earth metals are the second most reactive family of elements.They all have low densities, melting points and boiling points, and they tend to form solutions with a pH greater than 7.

Question 5

What is the electronic shell?

Answer 5

it is when electrons revolve around the nucleus in a specific path known as orbit