1. Density and Temperature
Chemistry --- Ms. Hughes

2. Density and Specific Gravity

3. VIII.) DENSITY AND SPECIFIC GRAVITY
A.) DENSITY is the ratio of the mass of a substance to the volume occupied by that substance.
Density = mass of substance OR d= m
Vol. of substance V

5. “Sinking Soda Surprise”
Which can is more dense?

6. Mass and Volume of the Soda Cans
Can Type
Mass
Volume
Dasani Sparkling Water
12 oz= 355 mL
Coca-Cola
Diet Coke
Mountain Dew
Sprite
Dr. Pepper

7. Calculate the Density of the Cans
Mass
Volume
Density
Sink/Float
Dasani
355 mL
Coke
Diet Coke
Mtn. Dew
Sprite
Dr. Pepper

8. Calculate the Density of the Cans
Mass
Volume
Density
Sink/Float
Dasani
355 mL
Coke
Diet Coke
Mtn. Dew
Sprite
Dr. Pepper

9. 1.) Density is expressed in different units depending on the phase of the substance. a.) Solids are usually expressed in grams per cubic centimeter (g/cm3)

10. b.) Liquids are commonly grams per milliliter (g/mL)

11. c.) Gases are usually expressed as grams per liter (g/L)

12. 2.) Density can be used as a conversion factor that relates mass and volume. 3.) Densities can be used to calculate mass if volume is given or calculate volume given mass.

13. WORKED EXAMPLE 1-5
If 10.4 mL of a liquid has a mass of g, what is its density? Solution. d= m d = g = g/mL V 10.4 mL

14. WORKED EXAMPLE 1-6
The density of a saline solution is 1.05 g/mL. Calculate the mass of a mL sample.
Solution.
d= m m = mL x g = 396 g
V mL

15. PRACTICE 1-8
The density of rubbing alcohol is g/mL. What volume of rubbing alcohol would you use if you needed 32.0 g? D = m g/mL = 32.0 g V V V= 32.0 g g/ml V= 40.7 mL

16. B.) SPECIFIC GRAVITY is the ratio of the density of liquid to the density of water at 4oC, which is 1.00 g/mL. Since specific gravity is a ratio of two densities, the units cancel.
 Specific gravity = density of sample (g/mL) Density of water (g/mL)

17. WORKED EXAMPLE 1-7
What is the specific gravity of jet fuel if the density is g/mL?
Solution.
Specific gravity= g/mL =
1.00 g/mL

18. PRACTICE 1-9
A 50.0 mL sample of blood has a mass of 53.2 g. a.) Calculate the density of the blood. d= m = 53.2g = 1.06 g/mL V 50.0 mL b.)Calculate the specific gravity of the blood. density of blood = 1.06 g/mL = 1.06 density of water 1.00 g/mL

19. TEMPERATURE

20. IX.) TEMPERATURE SCALES

21. PRACTICE 1-10 Complete the following table. Fahrenheit Celsius Kelvin
88oF
-55oC
469 K

22. PRACTICE 1-10 Complete the following table. Fahrenheit Celsius Kelvin
88oF
31oC 
304 K
 -67oF
-55oC
218 K 
 384.8oF
196oC 
469 K