Introduction to Chemistry

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.

Using the graduated cylinder to the right, select the most accurate AND precise measurement.

• A. 22 mL

• B. 20 mL

• C. 22.0 mL

• D. 20.0 mL

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?

• A. 2

• B. 3

• C. 4

• D. 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.

• A. physical

• B. chemical

• C. intensive

• D. 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

Matter with an indefinite shape but a definite volume would be considered a ________.

• A. solid

• B. liquid

• C. gas

• D. plasma

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.

• A. Gold

• B. Nickel

• C. Silver

• D. Zinc

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

• A. Cutting a piece of string in half.

• B. Freezing water into an ice cube.

• C. Crumpling a piece of paper into a ball.

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