Atomic Structure quiz review

What is the smallest form of matter?

• elements

• denisty

• raisins

• atoms

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Which of the following models accurately portrays the structure of an atom?

• 
• 
• 
• 

Answer explanation

The three other models seen within the previous slide were what scientist once believed the atomic structure looked like! Bohr then suggested that electrons move around the nucleus in "orbits" (which is now more accurately depicted as a cloud-like region)

Tags

NGSS.MS-PS1-1

An atom consist of 3 subatomic particles. Which of the following is NOT a subatomic particle?

• protons

• electron

• boron

• neutron

Answer explanation

Boron is a chemical element!

Protons are _____ charged with a ____ mass

• positively, small

• positively, large

• neutrally, large

• negatively, large

neutrons have a charge of ___ and a ____ mass

• +1, large

• -1, small

• 0, large

• +1, small

electrons have a ___ charge and a ____ mass

• +1, large

• -1, small

• 0, small

• -1, large

Tags

NGSS.MS-PS2-3

What two subatomic particles are found within the nucleus of an atom?

• p⁺ and n^o

• e^- and n^o

• p⁺ and e^-

A neutrally charged atom will always have the same number of ___ and ____

• e^- and n^o

• p⁺ and n^o

• e^- and p⁺

Answer explanation

In a neutral atom, the same number of positively charged subatomic particles (protons) cancels out with the same amount of negatively charged subatomic particles (electrons)

ex. in this image, the neutral atom has 2 p⁺ and 2 e^-, which cancel to make the overall charge 0!

the number of_____ in the nucleus of an atom is called the ____

• p⁺ , atomic number

• n^o , mass number

• n^o, atomic number

• e^-, mass number

Tags

NGSS.HS-PS1-8

The mass number is the sum of ...

• e^- and n^o

• e^- and p⁺

• p⁺ and n^o

• the atomic number and e^-