1. UNIT 1 Matter Day 3 September 1, 2017
Physical Properties of Matter
8th Grade Science

2. No Science starter; do the following:
Using complete sentences, answer the E.Q. on page 3.

3. Plan for today: 1. E. Q. 2. Density Discussion Notes Lab 3. Wrap-up
Matter
Plan for today:
1. E. Q.
2. Density
Discussion
Notes
Lab
3. Wrap-up

4. Homework:
1. Make flash card for:
(5) Density
2. Density worksheet front and back.
*You will turn in flash card 5 Tuesday, and I will check the density worksheet Tuesday.

5. Write today’s date on the top line of page 5 in your binder and copy the following:
Essential Question- How can I calculate density of objects?

6. Turn to your vocabulary sheet.

7. Measurable Properties of Matter
5. Density: (more on the next slide- It’s okay if you put some additional details in the definition box.) Def: the amount of matter in a given amount of space or volume. A.D. all matter has its own unique density

8. Measurable Properties of Matter
A.D. Formula - Density = Mass/Volume
m (g)
D =
V (mL or cm³)
A.D. Unit for density is g/mL or g/cm3.
A.D. Density of water is 1g/cm³ (anything with a higher density will sink in water; anything with a lower density will float)
A.D. fill this in on your notes m D V

9. Which has the greater density?
Greater density/blue layer

10. At the top of page 6, write “Density practice and lab”.

11. Calculate the density for the following objects: a. Mass= 10 Volume= 5
Practice – Answer on page 6. Only use 6 lines.
-5 minutes. Go!
Calculate the density for the following
objects:
a. Mass= 10 Volume= 5
b. Mass= 16 Volume= 8
c. Mass= 5 Volume= 10
d. Mass= 12 Volume= 12
Which object is water?
Which object(s) will float in water? Which objects(s) will sink in water?
2g/cm³
sinker
2g/cm3
sinker
0.5g/cm3
floater
1 g/cm³
water

12. You need a density lab worksheet. You will glue this onto page 6
You need a density lab worksheet. You will glue this onto page 6. try not to glue it over something else. Fold it, if necessary.

13. Density Lab – Work cooperatively with your lab group and be sure your answers are matching. Allow every group member to participate. Let me know if a group member is not cooperating.
Do not make a mess. When your group is done, clean up your station. Make sure all materials are back in the blue bucket. Leave things the way you found them.

14. Density Lab Part 1 – Irregular Solid
See if you can find the density of two marbles!
Use the materials at your lab table.
SHOW YOUR WORK - You will turn in this lab for points.
Mass of the two marbles _______
Volume of the two marbles _______
Formula for density __________
Calculation ____________________
Density of two marbles __________
(Did you include the correct units of measurement above?)

15. Density Lab Part 2 – regular Solid
See if you can find the density of the cube!
Use the materials at your lab table.
SHOW YOUR WORK - You will turn in this lab for points.
Mass of the cube _______
Volume of the cube _______
Formula for density __________
Calculation ____________________
Density of the cube __________
(Did you include the correct units of measurement above?)

16. Density Lab Part 2– regular Solid
Material
Density (g/cm3)
Copper
9.3
Brass
8.7
Steel
7.6
Aluminum
2.8
Acrylic
1.2
Oak
Nylon
1.15
Pine
Poplar
PVC
1.35

17. Density cubes – regular solids

18. “Inventory” 1 grad. Cyl. 1 triple b. b
“Inventory” 1 grad. Cyl. 1 triple b.b. rulers 2 marbles 1 small plastic cup 1 cube

19. WRAP- UP -
Discuss with your group and answer today’s E.Q.
Begin your density worksheet. It is homework (front and back). Also, do card #5.
Have a great long weekend. Be safe!!!