Alpha particles.....

• a) are positively charged.
• b) consist of two protons and four neutrons.
• c) can penetrate any thickness of matter
• d) All of the above 

Tags

NGSS.HS-PS1-8

When a nucleus undergoes nuclear decay by gamma rays, the atomic number of the element....

• remains the same
• decreases by one.
• increases by one.
• increases by two.

Tags

NGSS.HS-PS1-8

Radioactive materials have unstable...

• electrons
• protons
• nuclei
• neutrons

Tags

NGSS.HS-PS1-8

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

• alpha particle
• beta particle
• gamma ray
• positron

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

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

Tags

NGSS.HS-PS1-8

Two atoms of the same element but with different mass numbers are called________

• electrons
• isotopes
• ions
• reaction partners

Tags

NGSS.HS-PS1-8

Isotopes are elements with a different amount of

• protons
• neutrons
• electrons
• nuclei

Tags

NGSS.HS-PS1-8

How many neutrons does this isotope of lithium have?

• 8
• 3
• 11

• 5

Tags

NGSS.MS-PS1-1

What do these isotopes of carbon all have in common?

• neutrons & mass number
• atomic number and neutrons
• atomic number and electrons
• protons, atomic number, and mass number

Tags

NGSS.HS-PS1-8

Which type of nuclear radiation is being emitted here?

• Alpha
• beta
• gamma 
• none

Tags

NGSS.HS-PS1-8