2nd 9 WK Mid Assessment CORRECTIONS

Which statement describes an action that most likely resulted in a chemical reaction?

• A pan of water was heated on a stove, and steam formed.

• A liquid was mixed with another liquid, and a precipitate formed.

• A liquid was sprayed into the air, and a sweet odor was smelled.

• A child blew through a wand filled with soap, and bubbles were produced.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In the equation above, how many atoms are in the oxygen molecule?

• 2

• 0

• 1

• 4

Tags

NGSS.MS-PS1-1

Four students designed and built air propelled rockets that were launched into the air. Their data are recorded in the table.

Which rocket had the greatest acceleration?

• Rocket 1

• Rocket 2

• Rocket 3

• Rocket 4

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Two solutions are mixed and react to produce the solid precipitate AgCl. The chemical reaction is shown by the balanced chemical equation.

 What happens to the total mass as the reaction takes place?

• The mass increases.

• The mass decreases.

• The mass remains constant.

• The mass first decreases and then increases.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A student pushes a 51.5 kilogram bookshelf across a smooth floor with a net force of 67 N.

 

What is the approximate acceleration of the bookshelf?

• 1.3 m/s²

• 3,450.5 m/s²

• 
  15.5 m/s²

• 0.77 m/s²

Tags

NGSS.MS-PS2-2

How many atoms are in one molecule of baking soda, NaHCO₃? Record your answer. Be sure to use the correct place value.

• 9

• 3

• 6

• 4

Tags

NGSS.MS-PS1-1

Which of the digestive processes above will be found in the chemical change section of the Venn diagram shown above?

• II only

• II, III, IV

• III, IV

• IV only

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of these landforms is most likely to be found at a convergent boundary?

• Fault line

• Mid-ocean ridge

• Mountain

• Rift valley

Tags

NGSS.MS-ESS2-2

A student pushes a box with a force of 16 N to the left. Another student pushes the same box from the opposite side with a force of 8 N to the right.

According to the above information and diagram, what will be the result?

• The box will move to the right with an 8 N force.

• The box will move to the right with a 24 N force.

• The box move to the left with a 2 N force.

• The box move to the left with an 8 N force.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Students create a table that lists processes observed in nature.

 

Which process describes only a physical change?

• Process 1

• Process 2

• Process 3

• Process 4

Tags

NGSS.MS-PS1-2