Chemistry Final Exam

How does the density of water change as it freezes into ice?

• Increases

• Decreases

• Remains the same

• Fluctuates

Tags

NGSS.MS-PS1-4

At what temperature does water reach its maximum density?

• 0 degrees Celsius

• 4 degrees Celsius

• 100 degrees Celsius

• -10 degrees Celsius

How does the density of water compare to the density of most oils?

• Water is denser

• oils are denser

• they have the same density

• depends on the type of oil

What is the standard unit for expressing density?

• grams

• cubic meters

• kilograms per liter

• grams per cubic centimeters

What is the correct representation of a chemical equation for the reaction where hydrogen gas reacts with oxygen gas to form water?

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Which of the following is a balanced chemical equation for the reaction between hydrogen gas and oxygen gas to form water?

Tags

NGSS.MS-PS1-5

• Synthesis

• Decomposition

• Single displacement

• Double displacement

Which of the following is an example of a single replacement reaction?

What is the main difference between a combustion reaction and a synthesis reaction?

• Combustion must involve oxygen, while synthesis does not.

• Synthesis produces a single product, while combustion can produce multiple products.

• Combustion releases energy, while synthesis absorbs energy.

• Synthesis involves only one reactant, while combustion requires two or more.

• 4

• 7

• 3

• 6

Tags

NGSS.MS-PS1-5