Atom Structure Grade 8

What is proton?

• negative charge

• positive charge

• no charge

What is neutron?

• negative charge

• positive charge

• no charge

What is electron?

• negative charge

• positive charge

• no charge

The diagram shows the structure of a berryllium atom. Which part shows the orbit or shell?

• A

• B

• C

Tags

NGSS.MS-PS1-1

The diagram shows the structure of a berryllium atom. Which part shows the electron?

• A

• B

• C

Tags

NGSS.MS-PS1-1

The diagram shows the structure of a berryllium atom. What is C?

• electron

• nucleus

• neutron

• proton

Tags

NGSS.MS-PS1-1

Which of these statements about an atom of an element is true? Choose the two correct boxes.

• It always has the same number of protons

• It always has the same number of neutrons

• The number of protons can vary

• The number of neutrons can vary

Tags

NGSS.MS-PS1-1

In the Rutherford atomic model, the alpha particles were stroked on :

• aluminium

• gold

• silver

• titanium

The particles which were deflected backward in Rutherford's experiment were hit upon by:

• nucleus

• empty space

• electrons

• protons

Which two substances are mixtures?

• air

• carbon dioxide

• steel

• sodium chloride