Physical Science S1U2 Test Review

Which subatomic particle has a positive charge?

• proton

• electron

• neutron

• all particles

Which subatomic particle has a negative charge?

• proton

• electron

• neutron

• all particles

Which model of the atom first introduced the idea of a nucleus?

• Dalton's model

  
  

• Thomson's model

  
  

• Rutherford's model

  
  

• Bohr's model

  
  

Which model of the atom has electrons traveling in specific paths around the nucleus?

• Dalton's model

  
  

• Thomson's model

  
  

• Rutherford's model

  
  

• Bohr's model

  
  

What information does the atomic mass of an element provide?

• the sum of electrons and protons in an atom

  
  

• the difference between the number of protons and electrons

  
  

• the number of protons and neutrons in an atom

  
  

• the number of isotopes

  
  

How do scientists determine the number of neutrons in an isotope of an atom?

• They find the number of protons.

  
  

• They divide the atomic mass by two.

  
  

• They add the number of electrons and protons.

  
  

• They subtract the atomic number from the atomic mass.

  
  

What is the atomic number of an atom?

• the number protons and neutrons

  
  

• the number of neutrons

  
  

• the number of electrons and neutrons

  
  

• the number of protons

  
  

How many protons are in an element with an atomic number of 8 and a mass number of 18?

• 3

• 8

• 10

• 18

Tags

NGSS.MS-PS1-1

Two atoms that are isotopes of one another must have the same number of what?

• protons

• neutrons

• electrons

• all particles

Two atoms that are isotopes of one another must have a different number of what?

• protons

• neutrons

• electrons

• all particles