Atomic number

Question 1

Is the atomic number the top or bottom number

Answer 1

Bottom

Question 2

Which is the mass number

Answer 2

Top number

Question 3

What are groups

Answer 3

Vertical columns

Question 4

What are periods

Answer 4

Horizontal rows

Question 5

What did Mendeleev only have info on

Answer 5

Mass number

Question 6

Why did Mendeleev leave gaps in the periodic table

Answer 6

There were undiscovered elements

Question 7

What is an isotope ?

Answer 7

Two or more forms of the same element that contains equal numbers of protons but different numbers of neutrons

Question 8

How can you tell isotopes apart

Answer 8

They will have different mass numbers and different numbers of neutrons

Question 9

What does an atom contain

Answer 9

Electrons, neutrons, protons, electron shells and nucleus

Question 10

What is the location on a proton

Answer 10

Nucleus

Question 11

What is the charge of a proton

Answer 11

1+

Question 12

What is the mass of a proton

Answer 12

1

Question 13

What is the location of a neutron

Answer 13

Nucleus

Question 14

What is the charge of a neutron

Answer 14

0

Question 15

What is the mass of a neutron

Answer 15

1

Question 16

What is the location of an electron

Answer 16

In the electron shells

Question 17

What is the charge of an electron

Answer 17

-1

Question 18

What is the mass of an electron

Answer 18

Negligible

Question 19

What did John dalton think

Answer 19

That all matter is made up of tiny particles called atoms

Question 20

What is electronic configuration

Answer 20

Arranging the electrons in the atom