This document provides information and instructions for students regarding science class assignments. It includes reminders about recording assignment points, checking grades, completing density problems that are due the next day. It also mentions that progress notices will be handed out on Wednesday and there will be a binder check and test #1 on Thursday. Tables of data are included for calculating densities of different objects and liquids. Formulas and examples are provided for calculating density given measurements of mass and volume.

1. TODAY IN SCIENCE
You will Need:
1) Pencil, Calculator
2) Log #1 – update and record points
3) Density Problems – Bookshelf –
Staple to SAS Curriculum – Density
#11
4) SAS Curriculum – Density #11 +
Density problems –Due Tomorrow.
5) Progress Notice – To be handed
out on Thursday

2. REMINDERS
1) Record earned points on
Assignment Log #1
2) Check Your Grades – Progress
Notices to be passed out on
Wednesday
3) SAS Curriculum – Density #11 +
Problems –Due Tomorrow.
4) Test #1 and Binder Check #1 – Due
Thursday

3. BINDER CHECK #1 & TEST #1
1) Table of Contents is on-line
1) Edit out my notes to you
2) Organize Papers in the order of the
ToC
3) Number pages – Like a book
2) Test #1– Target Concepts on-line to
review
1) Create ½ page of notes, done by
hand, front side only
2) You will have 1 class period to
complete the test

5. Table 1: Data for objects 1-4
Object #
1
2
3
4
Mass
(g)
Initial
Volume
(mL)
5
5
5
Subtract Initial
Volume from Final
Volume
5
Final
Volume
(mL)
Object
Volume
(mL)

6. Table 2: Data for Objects 5-11
Object
#
5
6
7
8
9
10
Mass
(g)
Initial
Volum
e (mL)
Final Object
Volum Volum
e (mL) e (mL)
Density
(g/mL)
Water
RESULTS
(S= sink; F=floats)
Ethano
Gasoline Sea
H2O
SHOW WORK
Subtract Final from Initial
Divide Mass by
Object Volume

7. Table of Densities
Substance
aluminum
copper
gasoline
gold
ice
iron
lead
seawater
wood (average value)
Density
(g/mL)
2.7
8.9
Subtract Final 0.68 Initial
from
19.3
0.917
7.8
11.3
1.025
0.8
This table will help you with
question #11

9. Table 3: Liquid Densities
Liquid
Color of
Liquid
Light
1. Water
Blue
Dark
2. Ethanol
Blue
Dark
3. Gasoline
Green
Light
4. Seawater
Green
Volume
(mL)
5
5
Mass (g)
Density
(g/mL)
Subtract Final from Initial
5
5
Mass divided by Volume =
Density
SHOW WORK

10. Find the
density of the
crown.
1.Is it real
gold?
2.What is
your
evidence?

11. PRACTICE AND REVIEW
Gram
Mass Unit Label = ___________
cm3
Volume Unit Label = _______,
cc
________, ________
mL
g/cm3
Density Unit Label = __________,
g/mL
g/cc
__________, __________

12. DENSITY FORMULAS
1) Identify the type of numbers you
are given in the word problem.
2) Choose the correct version of the
Density formula
1) Tip: If you are given the mass
you will always DIVIDE
3) You may need to find VOLUME
first!

13. PROBLEM #1
1) Henry has a block of an unknown element
with measurements of 5.8 cm on each side.
It’s mass is 1645.9 grams. What is the
element’s density? (10pts) – 2 step problem
Is cm a “volume” unit? (Look at the labels at the top of your
paper?
NO
You will need to find volume 1st. What method
will you use?
Method #2 – LxWxH because it is a
REGULAR shaped object

14. PROBLEM #1
1) Henry has a block of an unknown element
with measurements of 5.8 cm on each side.
It’s mass is 1645.9 grams. What is the
element’s density? (10pts) – 2 step problem
5.8 x 5.8 x 5.8 =
195.11 cm
3

15. PROBLEM #1
1) Henry has a block of an unknown element
with measurements of 5.8 cm on each side.
It’s mass is 1645.9 grams. What is the
element’s density? (10pts) – 2 step problem
What type of number is “grams”? (Look at the labels at
Mass
the top of your paper?
Which version of the Density formula are you
going to use….YOU have MASS and you’ve
found the VOLUME?
D = m/v

16. PROBLEM #1
1) Henry has a block of an unknown element
with measurements of 5.8 cm on each side.
It’s mass is 1645.9 grams. What is the
element’s density? (10pts) – 2 step problem
1645.9 divided by 195.11 =
8.44 g/cm3

17. PROBLEMS – 7 AND 8
1) Remember – Density is how the particles are
packed.
2) No matter the size(volume) of a substance…
the particles will be “packed” the same way
3) Different substances have their particles
“packed” differently.
4) Density is the comparison of these two
measurements
Copper
Wood

18. REMEMBER
1. SAS Curriculum – DENSITY #11 –Due
Tomorrow at the beginning of the
period.
2. Check your Grades Progress
notices will be passed out on
Wednesday
3. Binder Check & Test #1 on Thursday