Structure of an Atom

Which element has 31 protons ?

• Gallium 
• Germanium
• Gadolinium
• Polonium

Tags

NGSS.MS-PS1-1

Which statement best describes an electron?

• Smaller mass than a proton and a negative charge
• Smaller mass than a proton and a positive charge
• Greater mass than a proton and a negative charge
• Greater mass than a proton and a positive charge

What number indicates the nucleus?

• 1
• 2
• 3
• 4

Which two particles make up the nucleus of an atom?

• Protons and Electrons
• Protons and Neutrons
• Molecules and Compounds
• Neutrons and Electrons

Tags

NGSS.HS-PS1-8

Most of the atom is filled with

• electrons
• empty space
• the nucleus
• protons

Tags

NGSS.MS-PS1-1

How many electrons are in the element, Oxygen, with the atomic number of 8?

• 7
• 10
• 8
• 9

Tags

NGSS.MS-PS1-1

All matter is made of

• energy

• electrons

• atoms

• compounds

Tags

NGSS.MS-PS1-1

The central region of an atom where its neutrons and protons are is its

• nucleus

• core

• electron cloud

• centre

The particles with no charge in an atom are the _______.

• electrons
• neutrons
• protons
• protons and neutrons

Tags

NGSS.MS-PS1-1

What is the relative charge of an electron?

• 1

• Neutral

• -1