Atoms have mass

Multiple Choice

Which part of the atom did Rutherford discover?

• Electron cloud

• Energy level

• Neutron

• Nucleus

Multiple Choice

What did Thomson’s plum pudding model suggest?

• Atoms are indivisible

• Electrons are embedded in a positive sphere

• Atoms are mostly empty space

• Electrons orbit the nucleus

Multiple Choice

Which of these particles is positively charged?

• Neutron

• Electron

• Proton

• Alpha particle

Multiple Choice

Which of the following is a correct success criterion for this lesson?

• I can describe the history of atomic theory

• I can list the parts of an atom and their properties

• I can name every scientist in order

• I can draw the plum pudding model

Labelling

Drag and label parts of an atom:

Drag labels to their correct position on the image

Proton

Nucleus

Electron

Neutron

Categorize

Options (3)

Proton

Neutron

Electron

Match each particle to its relative mass

Has a Mass of 1

Has a Mass of Approx 0

Multiple Choice

If an atom has 8 protons and 8 neutrons, what is its mass number?

• 8

• 16

• 0

• 64

Reorder

Order the elements by increasing atomic number

• Hydrogen

• Helium

• Lithium

• Beryllium

• Boron

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

Multiple Choice

Which notation correctly represents an atom with 6 protons and 6 neutrons?

• ⁶C₂

• ¹²C₆

• ⁶₁₂C

• ₆C₁₂

Multiple Choice

Which particles contribute to the atom’s mass?

• Protons and electrons

• Neutrons and electrons

• Protons and neutrons

• Electrons only

Multiple Choice

What is the atomic number of an atom with 17 protons?

• 17

• 34

• 18

• 8

Multiple Choice

An atom of Sodium has a mass number of 23 and atomic number of 11. How many neutrons does it have?

• 11

• 23

• 12

• 34

​In your textbook:

Turn to page 81 and answer questions 1 to 3