Unit 1 Introduction to Chemistry Test

Which of the following is an example of a qualitative observation?

• The shirt is red.

• The shirt has a mass of 15 grams.

• The shirt is 72 cm long.

• The shirt is ugly.

How many significant figures are in the measurement 760 mmHg?

• 0

• 1

• 2

• 3

How many significant figures are in the measurement 0.0103 mL?

• 2

• 3

• 4

• 5

A solution where the solvent is water is known as a(n) ________.

• aqueous solution

• alloy

• solute

• substance

A property of matter that depends on the amount of matter present would be considered a(n) ________ property.

• physical

• chemical

• intensive

• extensive

Micah tells his mom he can't go to school today to take his chemistry test because he is running a temperature of 310.2 K. What is his temperature in degrees Fahrenheit?

• -11.4 °F

• 2.81 °F

• 37.1 °F

• 98.7 °F

Using the data table to the right, determine the identity of a cube of metal that has a volume of 1.73 cm³ and a mass of 33.3 grams.

• Gold

• Nickel

• Silver

• Zinc

Which of the following is not an example of a physical change?

• Cutting a piece of string in half.

• Freezing water into an ice cube.

• Crumpling a piece of paper into a ball.

• Letting the food in your lunch box rot in your locker.

You are given a container filled with clumps of iron and sand. You can separate the iron from the sand using a magnet. This makes this a ________.

• homogeneous mixture

• compound

• heterogeneous mixture

• solution

You are conducting an experiment and find the volume of a substance to be 9.85 mL. If the known volume of the substance is 10.25 mL, find the percentage error in your measurement.

• -3.90%

• -4.06%

• 3.90%

• 4.06%