2024 First Semester Exam REVIEW

The dog has four legs.

• Opinion

• Observation

An educated guess is a(n)

• Problem

• Conclusion

• Hypothesis

• Procedure

Tags

NGSS.MS-LS1-5

An appropriate tool to measure distance is ____

• Metric Ruler

• Scale

• Stopwatch

• Yardstick

What practices should be followed when doing laboratory clean up?

• Clean all pieces of equipment and return all materials to their proper place.

• Clean only the pieces that will be reused by the next class.

• Nothing, the next class will clean up.

• Nothing, the other laboratory group members will take care of it.

What is the measurement of point b?

• 1.5 mm

• 1.5 cm

• 3.2 mm

• 3.2 cm

Which atoms are present?

• 1 silver, 1 nitrogen, 1 oxygen

• 1 silver, 1 nitrogen, 3 oxygen

• 1 silver, 3 nitrogen, 3 oxygen

• 3 silver, 3 nitrogen, 3 oxygen

Tags

NGSS.MS-PS1-1

What is shown in the picture?

• 1 compound, 3 elements, and 5 atoms

• 2 compound, 3 elements, and 6 atoms

• 1 compound, 2 elements, and 5 atoms

• 2 compound, 3 elements, and 5 atoms

Tags

NGSS.MS-PS1-1

Which is a chemical change?

• Change 1

• Change 2

• Change 3

• Change 4

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

How would this change be classified?

• As a chemical change because a new substance is formed.

• As a chemical change because a new substance is not formed.

• As a physical change because a new substance is formed.

• As a physical change because a new substance is not formed.

Tags

NGSS.MS-PS1-2

If more solvent is added to an aqueous solution, what happens to the concentration?

• The volume decreases, the amount of solute remains the same, and the concentration decreases.

• The volume increases, the amount of solute remains the same, and the concentration decreases.

• The volume increases, the amount of solute increases, and the concentration increases.

• The volume decreases, the amount of solute increases, and the concentration increases.

Tags

NGSS.MS-PS1-2