Unit 10 Review

An object with a mass of 2 kg experiences an acceleration of 6 m/s². What force is applied to the object?

• 3 N

• 0.33 N

• 12 N

• Not enough info to answer

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

An object with a mass of 5 kg is pushed with a force of 10 Newtons. Calculate the acceleration of the object.

• 15 m/s²

• 2 m/s²

• 50 m/s

• 0.5 m/s²

Tags

NGSS.MS-PS2-2

30 g of potassium nitrate was dissolved in 100 g of 45°C water. What best describes the solution?

• Unsaturated

• Saturated

• Supersaturated

• Desolate

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Which factor best explains why a scuba diver must come up from the water slowly?

• Increased pressure increased the amount of gasses dissolved in their blood.

• Increased pressure decreased the amount of gasses dissolved in their blood.

• Decreased temperature increased the amount of gasses dissolved in their blood.

• Decreased temperature decreased the amount of gasses dissolved in their blood.

30 g of potassium nitrate was dissolved in 100 g of 30°C water. It was then allowed to cool undisturbed to 15°C. What best describes the solution?

• Unsaturated

• Saturated

• Supersaturated

• Desolate

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

30 g of potassium nitrate was dissolved in 100 g of 50°C water. What best describes the solution?

• Unsaturated

• Saturated

• Supersaturated

• Desolate

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

What best describes what pH is a measure of?

• The concentration of hydrogen ions in solution.

• The concentration of hydroxide ions in solution.

• The concentration of oxygen ions in solution.

• The concentration of salts in soluton.

What are the products of an acid-base reaction?

• Water

• Salt

• Water & Salt

• Cannot be determined.

Which way can people best reduce land pollution caused by large amounts of waste dumped in landfills?

• They can use a water filter to use fewer water bottles.

• They can recycle their plastic, glass, paper, and cardboard items and only throw away non-recyclable items.

• They can watch less television, reducing electricity use and allowing their electronics to last much longer.

• They can refill large plastic containers, like those used for laundry detergent, instead of throwing them away.

What is the primary function of the mitochondria in a cell?

• Energy production

• Protein synthesis

• DNA replication

• Photosynthesis

Tags

NGSS.MS-LS1-2