Spring Midterm Review

A(n) ________________ is the smallest particle of an element that retains its identity in a chemical reaction.

• reactant

• atom

• compound

• element

When Chlorine gains an electron:

• The ion formed is an anion

• The ion formed is a cation

• The element is neutral

• The Ion formed has a +2 charge

Tags

NGSS.HS-PS1-2

What is the formula for Calcium fluoride?

• CaF

• Ca₂F

• CaF₂

• Ca₂F₇

Tags

NGSS.MS-PS1-1

What is the formula for the compound of the ions of Nitrogen and Sulfur?

• Al₃S₂

• Al₂S₃

• AlS

• Al₃S₆

How many dots will surround the element Carbon for it's Lewis Dot Structure?

• 2

• 4

• 6

• 8

The element Sulfur has how many dots for it's Lewis Dot structure?

• 2

• 8

• 6

• 4

Which of the following is not a chemical change or reaction?

• curdling of milk

• dissolving salt in water

• combustion of gasoline

• fading wallpaper by sunlight

Tags

NGSS.MS-PS1-2

For which compound name is the incorrect formula given?

• Aluminum sulfide Al₂S₃

• Magnesium iodide MgI₂

• Potassium selenide K₂Se

• Calcium oxide Ca₂O₂

Tags

NGSS.MS-PS1-1

Which of the following is not an Ionic compound?

• CO₂

• NaCl

• K₂S

• MgO

List the elements P, Sb, N, and As from smallest to largest atomic radius size.

• N, P, As, Sb

• Sb, As, P, N

• N, As, P, Sb

• Sb, P, N, As