Physical Science Final Exam Review

The graph below shows the motion of four cars. Based on the graph, which statement about all the cars is true?

• They are moving at a constant speed.

• They are changing their speed during travel.

• They are slowing down.

• They are stopped.

Tags

NGSS.MS-PS3-1

As the wheels of a train move along the train tracks, what type of friction exists between the wheels and the tracks?

• fluid friction

• rolling friction

• sliding friction

• static friction

A 1,500-kg truck has a net force of 4,200 N acting on it. What is the truck’s acceleration?

• 6,300,000 m/s/s

• 2,700 m/s/s

• 2.8 m/s/s

• 0.36 m/s/s

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NGSS.MS-PS2-2

Which element is classified as a metal?

• boron (B)

• antimony (Sb)

• phosphorus (P)

• cadmium (Cd)

The diagram below is the Bohr model of an atom. Which best describes this atom?

• It has 6 electrons.

• It has a positive charge.

• It has 6 valence electrons.

• It has a full outermost energy level.

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NGSS.MS-PS1-1

How many valence electrons are in a neutral atom of nitrogen (N)?

• 2

• 3

• 5

• 15

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NGSS.HS-PS1-1

What is the chemical formula for magnesium acetate?

• Mg₂(C₂H₃O₂)₂

• Mg(C₂H₃O₂)₂

• Mg₂C₄H₆O₄

• MgC₄H₆O₄

Tags

NGSS.MS-PS1-1

Which compound contains ionic bonds?

• C₂H₆

• PCl₅

• Ca₃N₂

• SF₂

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NGSS.HS-PS1-3

A 100-gram sample of cerium-143 has a half-life of 33 hours. How long will it take until there are only 6.25 grams of cerium-143 left?

• 66 hours

• 99 hours

• 132 hours

• 165 hours

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NGSS.HS-PS1-8

What is the formula to calculate speed?

• S = t/d
• S = d/t
• S = d x t
• S = t x d

Tags

NGSS.MS-PS3-1