periodic table

Question 1

what are atoms

Answer 1

Atoms are made of subatomic particles: protons, neutrons, & electrons. In an atom’s dense nucleus consisting of protons and neutrons. Electrons surround the nucleus in energy levels of the electron cloud.

Question 2

what is an atomic number ?

Answer 2

The atomic number is the number of protons in an atom. The number of protons determines the element, so the number of protons in an atom of an element does not change. ­

Question 3

a negatively charged particle found orbiting the nucleus of an atom

Answer 3

electrons

Question 4

a particle carrying no electric charge and forming part of the nucleus of an atom

Answer 4

neutron

Question 5

valance elctrons

Answer 5

if the group number is below 10 that is the # of valance and if over 10 subtract 10

Question 6

why are colomns so important

Answer 6

Elements in the same column have the same number of electrons in their outermost shell called Valence Electrons