Atomic Structure and Periodic Table Unit Review

Which particles make up the nucleus of an atom?

• protons and neutrons
• electrons and protons
• electrons, protons, and neutrons
• electrons and neutrons

An element with a mass number of 10 and an atomic number of 6 has how many protons?

• 5
• 8
• 6
• 10

How many electrons does Si contain? (click to see image)

• 14
• 28
• 2
• 4

Tags

NGSS.HS-PS1-1

Elements which are shiny, conduct electricity and heat are called

• metal
• nonmetal
• metalloid
• nonexistent

Group 18 elements are known as the _____ _____ and have full valence shells.

• royal gases.
• supreme solids.
• noble gases.
• legit liquids.

What period and group is Silver (Ag)? 

• Period 2, Group 1
• Period 3, Group 16
• Period 5, Group 11
• Period 2, 14

Which elements have the most similar chemical properties?

• K and Na
• K and Ca
• K and Cl
• K and S

Tags

NGSS.HS-PS1-2

An element's identity is determined by the number of

• electrons.
• protons.
• neutrons.
• valence.

Rows on the period table are called _____ while columns are called _____.

• groups, families
• groups, periods
• periods, groups
• families, groups

The central region of an atom where its neutrons and protons are is called the

• nucleus 
• electron cloud
• core 
• center