Quarter 1 Quarterly Review

The mass of a sample of nickel is determined to be 20.40 grams. How many significant figures are used to express this mass?

• 1

• 2

• 3

• 4

A student determines the density of a copper sample at room temperature to be 9.46 g/cm³. Based on Table S, what is the student’s percent error in determining the density of copper?

• 0.50%

• 5.0%

• 5.3%

• 5.6%

A student measured the melting point of a sample of gallium to be 309 K. Based on Table S, which numerical setup can be used to calculate the student’s percent error?

A laboratory setup that can be used to provide information about relationships between four plant species is represented below. This setup is part of the technique known as

• electrophoresis

• biological staining

• dissection

• chromatography

How much water should be added to the graduated cylinder shown below to increase the volume to 15 milliliters?

• 11 mL

• 10 mL

• 3 mL

• 4 mL

Which diagram represents an Erlenmeyer flask?

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• 
• 
• 

The basic unit of length in the metric system is the:

• kilogram

• gallon

• liter

• meter

The basic unit of mass in the metric system is the:

• kilogram

• gallon

• liter

• meter

Which diagram shows the safest method of heating a solution in a test tube? (Note: The student heating the tube is standing to the left of each diagram.)

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• 
• 
• 

The diagram shows a laboratory burner. Which letter represents the hottest part of the burner flame?

• A

• B

• C

• D