1. Introduction MASS DENSITY AND VOLUME

2. Measuring Mass Mass - the quantity of matter in an object
standard unit is gram (g)
Measured using a digital scale or triple beam balance

3. Measuring Volume and Capacity
Volume - the amount of space occupied by an object
standard unit is liter (L)
1 L = 1000 ml = 1000 cm3 = 1 dm3
Measured using a graduated cylinder
Capacity - a measure of the volume inside a container

4. Measuring Volume Measured with a graduated cylinder
Determine value of each mark on the scale
Read scale using the lowest position of the meniscus
Measure the meniscus at eye level from the center of the meniscus.
In the case of water and most liquids, the meniscus is concave. Mercury produces a convex meniscus.

5. Displacement Displacement Amount of water an object replaces
Equal to its volume

6. Volume of a Solid, Irregular Object
Displacement - amount of water an object replaces
Procedure
Place graduate beaker beneath spout
Fill the overflow can with water until water begins to spill
Empty the excess water
Place object to be measured into the overflow can
Remove when water stops flowing out of the can
Measure the displaced water using a graduated cylinder.

7. Volume of a Solid, Irregular Object
Displacement
Calculate the difference between the initial and final volume measurement.

8. Volume of a Solid, Regular Object
Volume - length x width x height
V = 2.8 cm x 3.2 cm x 2.5 cm
V = 22.4 cm3
Measured with a ruler

9. Calculating Density
Density - a specific property of matter that is related to its mass divided by the volume.
D=M/V
the ratio of mass to volume
used to characterize a substance
each substance has a unique density
Units for density include:
g/mL
g/cm3
g/cc

10. Measuring Time
Time
metric unit is second (s)

11. Measuring Temperature
Temperature - the degree of “hotness” of an object
standard unit is celsius (°C)
measured with a thermometer

12. Temperature Conversions
Conversion Between Fahrenheit, Celsius, and Kelvin
Example:
Convert 75 ºC to ºF
Convert -10 ºF to ºC

13. Measurement Unit Conversion
You can convert between units of measurement
within the metric system
between the English system and metric system

14. Conversion and the Metric System
ACS
Ms. Grogan

15. Measurement Unit Conversion
You can convert between units of measurement
within the metric system
between the English system and metric system

16. Unit Conversion
Let your units do the work for you by simply memorizing connections between units.
Example: How many donuts are in one dozen?
We say: “Twelve donuts in a dozen.”
Or: 12 donuts = 1 dozen donuts
What does any number divided by itself equal?
ONE!

17. Unit Conversion This fraction is called a unit factor
Multiplication by a unit factor does not change the amount - only the unit.
Example: How many donuts are in 3.5 dozen?
You can probably do this in your head but try it using the Factor-Label Method.

18. Unit Conversion Rules Start with the given information…
Then set up your unit factor…
See that the original unit cancels out…
Then multiply and divide all numbers…

19. Unit Conversion Practice
Example: Convert 12 gallons to units of quarts.

20. Unit Conversion Practice
Example: Convert 4 ounces to kilograms.