6th Grade Chemistry Unit Test 2023

What is the atomic number of helium?

Which subatomic particle carries a negative charge?

• Proton

• Neutron

• Electron

• Positron

Which of the diagrams below shows particles with a definite shape and a definite volume?

• Diagram A

• Diagram B

• Diagram C

• None of the diagrams fit this description

A proton has a charge of:

• +1

• -1

• 0

• +2

A proton has a mass of:

• 1 amu

• 0 amu

• 2 amu

• -1 amu

An electron has a charge of:

• +1

• -1

• 0

• +2

A neutron has a charge of:

• +1

• -1

• 0

• +2

Where are electrons found?

• In the clouds surrounding the nucleus

• In the nucleus

• In the neutrons

• In the protons

What is the atomic number of the atom in the diagram below?

What is the mass of the atom in the diagram below?