Lesson 1 Atomic Structure Quiz Y9

Atoms are invisible to the naked eye.

• True

• False

Atoms are made up of the following sub-atomic particles.

• Protons and neutrons

• Neutrons and electrons

• Electrons

• Protons, neutrons and electrons

Which particles are found in the nucleus of an atom?

• Protons

• Neutrons

• Protons and neutrons

• Protons and electrons

Which sub-atomic particle is found in the orbit or shell of an atom?

• Proton

• Neutron

• Electron

Which statement about atoms is correct?

• All atoms contain equal number of protons and neutrons

• All atoms of the same element have the same number of protons

• The periodic table lists atoms in increasing mass

• The smallest part of an atom is an element

What is the mass of the atom shown in the picture?

• 3

• 4

• 7

• 10

The diagram shows a helium atom. Which particles in the atom have the same mass?

• proton and neutron

• proton and electron

• neutron and electron

• proton, neutron and electron

Which diagram represents a single element?

• A

• B

• C

• D

What is formed when an atom has more protons than electrons?

• A neutral atom

• A positive ion

• A negative ion

How many neutrons are in one atom of phosphorous?

• 15

• 16

• 31

• 46