1. Topic: Lab Skills
Aim: How can volume be determined?
Volume of the water can be measured by
______________________________________________________
Do Now:
How can we measure the volume of this sample of water?

2. What is
volume?
The amount of space an object takes up
UNITS = L or cm3

3. Volume of liquids is determined by using a graduated cylinder
Volume is measured with liters

4. Measure at the MENISCUS

5. V =73 mL

6. V = 18 mL

7. V = 294 mL

8. V =6.6 mL

9. V =21.5 mL

10. How is
Volume of a solid
measured?
V = L x W x H

11. Example:
L =2 cm, W=1 cm, H=1 cm
V = L x W x H
V =2cm x 1cm x 1cm
V = 2 cm3

12. Example: V = ?

13. V = L x W x H
V = 2cm x 3cm x 5cm
V = 30 cm3

14. Water Displacement =
to measure volume of an irregular shaped object
Use graduated cylinder
V = Volume of water with object – Volume of water without object
How can we measure the volume of this rock?

15. V = 9 – 7= 2
V = 2 mL
V1 = 7 mL
V2= 9 mL

16. Example:
V = 20 –11.5
V = 8.5 mL
V1 =11.5 mL
V2 = 20 mL

17. What’s the volume?
________mL
150

18. Aim: How is mass determined?
Topic: Lab Skills
Aim: How is mass determined?
What is the volume of the rock in the diagram to the left?
Do Now:
Volume = 3.0 mL
How could we determine the mass of the rock?
Triple beam balance

19. Amount of matter that an object contains
What is
mass?
Amount of matter that an object contains
What unit can be used to describe mass?
GRAM

20. When you hit a volleyball, it might hurt just a bit as it bounces off your hands to go sailing over the net. That's because, although a volleyball isn't very massive, the mass it does have makes it resist your effort to change its motion. Bowling balls, on the other hand, possess much more mass than volleyballs do. If you tried to knock a bowling ball over the net, you just might break your arm!

21. How is
mass
measured?
TRIPLE BEAM BALANCE

25. Mass = 542 gm

26. Mass = gm

27. Mass = 25.4 gm

28. Mass = 79.4 gm

29. weight is a measurement of the gravitational force acting on an object
How is mass
DIFFERENT
from weight?
Weight varies based on location, whereas mass is constant.

30. Earth vs. Moon
If your weight on Earth is 100lbs, on the Moon it would be 16 lbs.
If your mass on Earth is 65Kg, your mass on the Moon would be 65Kg