Benchmark 4 Review 1

Which image shows the best example of gravitational potential energy?

• 
• 
• 
• 

Tags

NGSS.MS-PS3-2

A large snowball is rolling down a hill. At what point on the snowball’s path, shown below, will it have the least potential energy?

• A

• B

• C

• D

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NGSS.MS-PS3-2

A pencil is sitting on DeAnthony’s desk. He accidentally bumps it, and the pencil falls to the ground. At what point does the pencil have the most gravitational potential energy?

• When it is sitting on the desk

• Immediately after it rolls off the desk

• Midway through falling

• Right before it hits the ground

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Potential energy is energy that is _________ in a system or object.

Tags

NGSS.MS-PS3-2

When an object’s height increases, its potential energy _______.

Tags

NGSS.MS-PS3-2

How many hydrogen atoms are needed to bond with nitrogen to create one molecule of ammonia, NH₃?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

What is the difference between a molecule and compound?

• 
  A molecule is only one atom; a compound contains at least two atoms.

• A molecule is two or more atoms chemically bonded; a compound is a molecule that contains only one element.

• A molecule is two or more atoms chemically bonded; a compound is made of molecules that contain at least two different elements.

• All molecules are compounds; there is no difference.

Tags

NGSS.MS-PS1-1

If one carbon atom chemically combined with one oxygen atom, which of the following chemical formulas would it represent?

• 
  Co

• 
  C₂O

• CO₂

• CO

Tags

NGSS.MS-PS1-1

A  __________ is a set of chemical symbols and numbers that can be used to describe a compound.

Which of the following is an example of a new substance being formed by a chemical reaction?

• Water boiling into water vapor

• Ice melting into water

• 
  Wood burning into ash

• Salt dissolving in saltwater

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5