CIA #1 Pre-Test

1. Calculate the following using the rules of significant figures: 34.89 + 12.3 =

• 50
• 47
• 47.2
• 47.19

2. How many significant figures should there be in the answer when you multiply 5.87 by 3.194?

• 7
• 3
• 4
• 2

3. Convert 0.13 miles to centimeters (2.54 cm = 1 inch; 5280 ft = 1 mile)

• 3.10 x 10^4
• 2.78 x 10^5
• 7.50 x 10^-4
• 2.09 x 10^4

4. A student measures the mass of an object to be 5.7 grams. What would the density be if the volume of the object was 45.0 mL?

• 0.126 g/mL
• 7.9 g/mL
• 0.56 g/mL
• 8.5 g/mL

5. How many significant figures are in the number 0.009802300?

• 10
• 5
• 7
• 4

6. Which of the following is classified as a physical change?

• freezing
• burning
• souring
• rusting

7. The state of matter in which the particles are most tightly packed is in the_________________________.

• Gas state
• Solid state
• Liquid state
• Plasma state

8. Which of the following is an example of a heterogeneous mixture?

• milk
• NaOH solution
• Italian Dressing
• Coffee

9. Which of the following describes a chemical change?

• The identity of the substance is not altered
• Only a phase change can occur
• Are fully reversible
• Creates a new substance

10. Which state of matter has the lowest capability of compression?

• Gas State
• Solid State
• Liquid State
• Plasma State