Atoms Elements and the Periodic Table

Question 1

most abundant element in the universe

Accepted Answer

Hydrogen

Question 2

positive particle found in the nucleus of an atom

Accepted Answer

proton

Question 3

This element has 20 protons in the nucleus of its atoms

Accepted Answer

Calcium

Question 4

This group of elements all have one electron in its last energy level

Accepted Answer

Alkali Metals

Question 5

Mg

Accepted Answer

Magnesium

Question 6

Atomic mass is 9 and the atomic number is 4, this element is ? and has ? neutrons

Accepted Answer

Beryllium, 5

Question 7

K

Accepted Answer

Potassium

Question 8

This element has no neutrons in the nucleus of its atom

Accepted Answer

hydrogen

Question 9

tells the number of protons that is in the nucleus of an atom

Accepted Answer

atomic number

Question 10

name given to a horizontal row of the periodic table

Accepted Answer

period

Question 11

simplified model of an atom with 7 energy levels that electrons travel on

Accepted Answer

Bohr Model

Question 12

This family of elements all have 2 electrons in their last energy level

Accepted Answer

alkaline earth metals

Question 13

atomic number 26

Accepted Answer

Iron

Question 14

This element has the atomic number of 7

Accepted Answer

Nitrogen

Question 15

Number of naturally occurring elements

Accepted Answer

92

Question 16

the number of electrons that can fit on the first three energy levels

Accepted Answer

2 8 18

Question 17

This family of elements are made up non reactive gases

Accepted Answer

Noble Gases

Question 18

arrangement of all the elements by increasing atomic number

Accepted Answer

periodic table

Question 19

This family of elements all have 7 electrons in their last energy levels

Accepted Answer

Halogens

Question 20

column of elements in the periodic table of the chemical elements.

Accepted Answer

family

Questions 20