Atomic Structure and the Periodic Table Assessment Review

Which of the following represents Bohr's model of the atom?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

Match the following

• Electron

• negatively charged

• Proton

• no charge

• Neutron

• positively charged

Tags

NGSS.MS-PS1-1

NGSS.MS-PS2-3

Period number equals the number of ​ (a)   while the Group number tells you the number of ​ (b)   .

• energy levels
• valence electrons

How many electrons fill the first energy level?

• 2

• 4

• 8

• 16

How many electrons fill the second energy level?

• 2

• 4

• 8

• 16

How many electrons fill the third shell?

• 2

• 8

• 18

• 32

Where in an atom are the electrons located?

• inside the nucleus

• outside the nucleus

In a neutral atom the number of electons equals the number of

• neutrons.

• protons.

• atomic mass.

Tags

NGSS.MS-PS1-1

Which of the following best explains the structure of the atom?

• There is a tiny nucleus and a large electron cloud filled with empty space

• There is a tiny nucleus and a tiny electron cloud

• The nucleus is bigger than the electron cloud

• The electron cloud is made of protons and electrons, the nucleus has neutrons

The “fuzzy” representation of electron locations in the quantum mechanical model is called a(n)

• electron cloud.

• atomic cloud.

• fuzzy area.

• atom cloud.