Nuclear Chemistry

How many neutrons does this fluorene isotope have? 

• 10
• 19
• 9
• 28

From where in the atom is ionising radiation emitted? 

• Orbital shells. 
• Nuclei. 
• It depends on what type (α, β, or γ) the radiation is. 

The type of radioactive particle that can be most easily stopped is the ____.

• Alpha Particle
• Beta Particle
• Gamma Ray
• Uranium

 The three types of nuclear radiation in increasing order of penetrating power are ____.

• gamma, beta, alpha
• alpha, gamma, beta
• alpha, beta, gamma
• beta, gamma, alpha

Tags

NGSS.HS-PS1-8

Negatively charged particles emitted from a nucleus at a high speed are ____.

• alpha particles
• beta particles
• gamma rays
• uranium

Tags

NGSS.HS-PS1-8

Which radiation has no electric charge associated with it?

• alpha
• beta
• gamma
• alpha and beta

An alpha particle consists of 

• two protons, two neutrons, and two electrons.
• two neutrons and two electrons.
• two protons and two neutrons.
• two protons and two electrons.

Tags

NGSS.HS-PS1-8

Which type of radioactive decay occurs when the atomic number increases by one?

• beta decay
• alpha decay
• positron decay
• gamma decay

Tags

NGSS.HS-PS1-8

When a nucleus emits a beta particle, its atomic number 

• changes, and so does its mass number.
• changes, but its mass number remains constant.
• remains constant, and so does its mass number.
• remains constant, but its mass number changes.

Tags

NGSS.HS-PS1-8

What is Half-life?

• The amount of time it takes for some of the nuclei in a sample of the isotope to decay
• The amount of time it takes for half the electrons in a sample of the isotope to decay
• The amount of time it takes for half the nuclei in a sample of the isotope to decay
• the amount of time it takes to double the nuclei in a sample of the isotope to decay

Tags

NGSS.HS-PS1-8