Atomic Structure Revision

A proton has what charge?

• Positive

• Negative

• Neutral

• +1

What is the atomic number of the lead isotope within this equation?

• 80

• 82

• 84

• 86

The time taken for half of a radioactive substance to decay is called its...

• ...half-life.

• decay time.

• nuclear decay.

• decomposition time.

What is the half-life of this substance?

• 12 minutes

• 8 minutes

• 4 minutes

• 1 minute

Beta radiation is first absorbed by?

• Skin

• Paper

• Aluminium

• Lead

Why must all sources be contained in lead?

• It's cheaper

• It's easier to mould into shape

• It removes the heat well

• It absorbs all radiation

Subatomic particles with a negative charge

• Electrons

• Neutrons

• Protons

• Quarks

Tags

NGSS.MS-PS2-3

Most of the mass in an atom is made up of _____________________?

• protons and electrons
• protons and neutrons
• neutrons and electrons
• electrons and quarks

Found in the nucleus of an atom. This particle has a positive charge.

• Neutron

• Proton

• Electron

• Decepticon

Subatomic particles with a positive charge

• neutrons
• atomic mass
• protons
• isotopes

Tags

NGSS.HS-PS1-8