1. Measuring Matter

2. Matter
Anything that has mass and takes up space

3. Mass The amount of matter in an object Measured in grams or kilograms
Measured by a triple beam balance

4. How is mass different from weight?
Weight can change, mass doesn’t
For example, you weigh less underwater than you do on land. But your mass stays the same.
What happens to your weight when you go into space??

5. Using a Triple Beam Balance
Place an object on the left side of the balance.
Move the three different weights until the lines on the right match
Add the three weights together
What mass is shown here?
373.5 grams

6. Units of Measurement Volume of Regular Object = cm³ (cubic centimeter)
m³ (cubic meter)
Volume of Irregular Object=
mL (mililiter)
L (liter)
Mass=
g (gram)
kg (kilogram)
Density=
-g/mL
-g/ cm³

7. Volume The amount of space matter occupies
How to find the volume of a regular object:
length x width x height
Mention difference between area and volume; 2-dimensional vs 3-dimensional

8. Your Turn
What is the volume of a piece of wood that is 11 cm long, 2 cm wide, and 2 cm high?
44 cm³
What is the volume of this cereal box?
22 cm ⃡
↕ 35cm ⃡
Notice units are cubed
5 cm
3850 cm³

9. Volume of an Irregular Object
Fill a graduated cylinder with water
Measure the water level
Place the object into the water
Measure the water level now
New water level
-Old water level

10. Your Turn 38-32= 6mL What is the water level at first? 32 mL
What is the new water level?
38 mL
38-32=
6mL

11. 40-30= 10 mL What is the water level at first? 30 mL
What is the new water level?
40 mL
40-30=
10 mL

12. Density Density=mass/volume
How much matter there is in a certain amount of space
Density=mass/volume
Which square is more dense?
3 cm
3 cm
Mass- 5 g
Mass- 20 g

13. Density 27 cm³ 27 cm³ 3 cm 3 cm Volume= 3x3x3 Volume= 3x3x3 Mass=5 g
Density=5/ g/cm³
Mass=20 g
Density=20/ g/cm³

14. Your Turn
George has a watch. It has a mass of 16g and a volume of 4mL. What is its density?
4 g/mL
Joshua has a wallet. It has a mass of 20g, and a volume of 4 mL. What is its density?
5 g/mL

15. Your Turn
Melissa has a book. It has a mass of 275g and a volume of 588cm3. What is its density?
0.46 g/cm³
Melissa also has a notebook. It has a mass of 279g, and a volume of 456 cm3. What is its density?
0.61 g/cm³

16. Density demo