All elements in the same group have the same number of ___.

• protons
• neutrons
• atomic mass units
• valence electrons

Elements in the same ________ are more chemically similar.

• group
• period
• club
• table

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

Charlotte is studying the periodic table and wants to know the period for Bromine. Can you help her?

• 3

• 2

• 4

The majority of elements on the periodic table are (a)  

• man made.
• nonmetals.
• metals.
• gases.

Semiconductors, or metalloids, can be described as (a)   .

• same as nonmetals
• bad conductors
• characteristics of metals and nonme
• same as metals

Which of the following elements is a semiconductor?

• Boron

• Aluminum

• Lead

• Bismuth (Bi)

Beryllium is in group number______.

• Group 2
• Group 3
• Group 4
• Group 7

Which element has 2 energy shells and 3 valence electrons

• Si
• B
• Li
• He

Tags

NGSS.HS-PS1-1

How many energy shells does Barium (Ba) have?

• 1
• 2
• 5
• 6

Tags

NGSS.HS-PS1-1