Performance Task Review

Which group (column) will this element be in?

• Group 1

• Group 2

• Group 3

• Group 4

Tags

NGSS.MS-PS1-1

Which element is shown in this Bohr Model?

• H

• Li

• Na

• K

Tags

NGSS.MS-PS1-1

Which element is shown in this Bohr Model?

• H

• Li

• Na

• K

Tags

NGSS.MS-PS1-1

Which element is shown in this Bohr Model?

• O

• N

• F

• Cl

Tags

NGSS.MS-PS1-1

What is the trend for atomic radius?

• No.

• Is it the same as the trend for mass?

• Increases

• From top to bottom in a group

• Decreases

• From left to right in a period

Reorder the following- the largest element on the left and the smallest on the right

• Cl

• K

• Na

• Ca

Which requires the most energy to remove an electron (ionization energy): Lithium or Chlorine? Why?

• Lithium because it has a smaller atomic radius.

• Lithium because it has a larger atomic radius.

• Chlorine because it has a smaller atomic radius.

• Chlorine because it has a larger atomic radius.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Elements have a higher melting point when they have ______ forces which make the bonds harder to break.

Tags

NGSS.HS-PS1-3

NGSS.HS-PS1-4

In ionic compounds, the positive and negative ions are attracted to eachother. This is a ​ (a)   force that will require a lot of energy to break.

• weak
• neutral
• lame
• strong

Tags

NGSS.MS-PS2-5

What makes an element more reactive? There are TWO answers you must select.

• A smaller number of valence electrons

• A larger atomic radius (causing a lower ionization energy)

• A higher number of valence electrons

• A smaller atomic radius (causing a higher ionization energy.)

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2