T4W5 - Nuclear Decay

If Bromine has 35 protons and a mass of 80, how many neutrons does it have?

• 35

• 115

• 45

Carbon-14 and carbon-12 have the same number of protons but a different number of neutrons. These different forms of the same element are called

• radioactive

• isotopes

• nuclei

• tracers

Radioactive materials have unstable...

• electrons
• protons
• nuclei
• neutrons

A helium nucleus with two protons and two neutrons is called a(n) ____.  

• alpha particle
• electroscope
• beta particle
• gamma ray

The most penetrating type of radiation is the ____.  

• alpha particle
• gamma ray
• beta particle
• uranium

Alpha particles.....

• are positively charged.

• consist of two protons and four neutrons.

• can penetrate any thickness of matter

• All of the above 

The type of radioactive particle that can be stopped by a sheet of paper is the ____.

• alpha particle
• beta particle
• gamma ray
• uranium

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

• alpha particle
• gamma rays
• beta particles
• X rays

List the three types of nuclear radiation in increasing order of penetrating power.  

•   alpha, beta, gamma 
• X ray, beta, gamma
• gamma, beta, alpha

• X ray, gamma, beta 

What nuclear decay reaction gives of extremely high energy waves?

• alpha

• beta

• gamma