The document provides instructions and assignments for students, including completing worksheets on elements, compounds, and mixtures; counting atoms; and updating a log. It also assigns roles for group work including manager, materials manager, timer/designer, and oral presenter. Various chemistry formulas are explained, showing the elements and numbers of atoms that make up different compounds.

1. W
ch e ar
an e
You Will Need: Se ging
at
• Pencil, Colored Pencils s
• Elements, Compounds and
Mixtures (2pages4sides) Did
you do your R&R on page 1? –
Due Now
• Atoms: Building Blocks of
Matter – Counting Atoms –
2 pages 4 sides – Bookshelf
4. Update Log #4

2. 1.MANAGER– Organizing, Understanding,
Turning in Work
2. MATERIALS MANAGER– Collecting,
Keeping supplies in good condition,
Returning, Organize Table Box
3. TIMER/DESIGNER– Track and
Communicate Time, In charge of design,
sketching and quality of product
4. ORAL PRESENTER– Communicator,
Asks Questions for the group, Presents
finding

3. The formula for a compound indicates the
elements that make up the compound and the
number of atoms of each element present in
that specific compound. These numbers of
atoms are indicated by the use of small
numbers called subscripts.
Sometimes groups of atoms act as a group
of atoms. Such a group of atoms is called a
polyatomic ion.

4. When a subscript appears outside the
parentheses, it indicates that all the
elements inside the parentheses should
be multiplied by that subscript.
Fe(OH)3

5. • Calcium Carbonate = Limestone
CaCO3
Ca = Calcium = 1
C = Carbon = 1
O = Oxygen = 3

6. • Magnesium Hydroxide
Mg(OH)2
Mg = Magnesium= 1
O = Oxygen= 2
H = Hydrogen= 2

7. Trinitrotoluene = (TNT) explosive
C7H5(NO2)3
C= Carbon = 7
H = Hydrogen = 5
N = Nitrogen = 3
O = Oxygen = 6

8. As you look over these compounds you
may observe that many of them contain
atoms
similar _________ of elements. Since
carbon
we are a ______________ based
environment, carbon is found in all living
organisms. The elements in the Human
Body can be broken down to include the
main elements of Hydrogen, Oxygen,
Nitrogen, Carbon and representatives
from about 20 other elements.

9. SIX
The _________ main elements that
make up most living organisms are
Phosphorus
Carbon, ________________, Sulfur,
Hydrogen
__________________, Oxygen and
Nitrogen
_____________.

10. •Mass Unit Label =______________
grams
cm3
•Volume Unit Labels = ________,
_______ or _______as a unit label
mL cc
g/cm3
•Density unit label = ___________,
g/mL g/cc
________ or __________

11. 5 points given:
• 2 points for the problem you are
inputting into the calculator
• 2 points for the answer rounded
to the nearest hundreth
• 1 point for the unit label

12. Counting Atoms – Due
tomorrow at the beginning
of class
b STAR Cards 61-101 – Due
Friday /Quiz