Topic 1 6th Grade Review

Three liquids were added to a cylinder by a teacher. The students examined the cylinder and the liquids in the cylinder. Based on the drawing, which statement is a valid conclusion about the density of the three substances?

• The top is denser than the bottom, and the middle is water, so it is one.

• The top is denser than water, and water is denser than the bottom.

• The bottom is denser than water, and water is denser than the top.

• Water is denser than the top, and the top is denser than the bottom.

Tags

NGSS.MS-PS1-2

The students examined the properties of four different samples and recorded observations about their properties in the table. According to the students' observations, which sample represents a non-metal?

• Sample 1

• Sample 2

• Sample 3

• Sample 4

Students were asked to create four different mixtures. Which experimental results would show that a homogeneous mixture was created?

• Results 1

• Results 2

• Results 3

• Results 4

Tags

NGSS.MS-PS1-2

The graph shows the properties of four elements. Based on these properties, which element is most likely to be a metal?

• Element 1

• Element 2

• Element 3

• Element 4

John completed the table below after measuring the mass and volume of each block. He then decided to place each block in a bubble bath, which has a density of 1.03 g/mL. Which of the following statements is supported by the table?

• Both blocks will sink in the bubble bath.

• Both blocks will float in the bubble bath.

• Block 1 will sink in the bubble bath while Block 2 will float.

• Block 1 will float in the bubble bath while Block 2 will sink.

Tags

NGSS.MS-PS1-2

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

• A pot of chili was heated on the stove and steam came out of the chili.

• Two liquids were mixed and a precipitate formed.

• A liquid was sprayed into the air and an unpleasant odor was perceived.

• A child blew out the candles on a birthday cake.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The table lists different types of substances. Identify the type of substance described in the 3rd column.

• Pure substance

• Compound

• Homogeneous

• Heterogeneous

Sam observed four different solid substances added to separate beakers with water. They stirred the mixtures and then recorded their observations in the table. Which substance likely caused the formation of a new substance when mixed with water?

• Substance 1

• Substance 2

• Substance 3

• Substance 4

Tags

NGSS.MS-PS1-2

In a laboratory, three layers of liquid were formed in a glass. Then three objects were dropped into the liquids. The students observed to see where the objects floated. Water has a density of 1 g/cm³. Which components of the density tower have a density of more than 1 g/cm³ and less than 1 g/cm³?

• A. Vegetable oil and maple syrup

• B. Water and vegetable oil

• C. Maple syrup and water

• None of the answers

Tags

NGSS.MS-PS1-2

In each investigation, the scientist combined two of the liquids and recorded observations in the table below. In which investigation are the liquids least likely to react chemically?

• A. 1

• B. 2

• C. 3

• D. 4

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5