Physical Science Final Exam Review

An element is located in Group 2 (II) and Period 3 on the periodic table. What is its oxidation number?

• 
  –2

• 
  +2

• 
  –3

• +3

An atom has 3 valence electrons. An atom of which element has this characteristic?

• 
  lithium (Li)

• sodium (Na)

• aluminum (Al)

• scandium (Sc)

Which bond forms NaF?

• 
  ionic bond

• 
  metallic bond

• covalent bond

• 
  hydrogen bond

Which type of bond forms the compound NO₂?

• covalent

• hydrogen

• 
  ionic

• 
  metallic

Which is the name for the chemical formula MgCl₂?

• magnesium chlorine

• magnesium dichloride

• magnesium chloride

• monomagnesium dichloride

Tags

NGSS.MS-PS1-1

What is the chemical formula for potassium sulfide?

• 
  KS

• 
  KS₂

• 
  K₂S

• 
  K₃S₂

Tags

NGSS.MS-PS1-1

This chart shows the time it took four different football players to run the length of a football field.

If the football field is 91 m long, which player had the fastest speed?

• 
  Player 1

• 
  Player 2

• 
  Player 3

• 
  Player 4

Tags

NGSS.MS-PS3-1

A student leaves her home and walks 300 m east to the library, 250 m east to the bakery, and then 400 m west to the post office. What is her total displacement?

• 150 meters east

• 350 meters west

• 400 meters west

• 
  950 meters east

Which object has a momentum greater than a object with a momentum of 360 kg•m/s?

• a 105-kg object traveling at 3 m/s

• an 80-kg object traveling at 5 m/s

• a 35-kg object traveling at 9 m/s

• a 15-kg object traveling at 16 m/s

A box is pushed toward the right across a concrete floor. What can be concluded about the type and direction of friction applied to the box?

• 
  Rolling friction acts on the box, and the direction of the friction is to the left.

• Sliding friction acts on the box, and the direction of the friction is to the left.

• Sliding friction acts on the box, and the direction of the friction is to the right.

• 
  Rolling friction acts on the box, and the direction of the friction is to the right.

Tags

NGSS.MS-PS2-2