Initial mass of mixture

Mass of iron recovered

Mass of 250 mL beaker

Mass of sand after drying

Mass of beaker with salt (after evaporation)

Mass of salt recovered

Total mass recovered

A

B

C

D

E

F

G

E - C

B + D + F

1. What does an exothermic reaction feel like in lab?

2. What does an endothermic reaction feel like in lab?

Day 4 10-1

1. What is science?

2. What is chemistry?

CP Chem I

Our Definiton . . .

. . . the purpose of science:In the simplest terms, science

attempts to . . . EXPLORE and EXPLAINEXPLORE and EXPLAIN. . . the natural world.

How Does Science Accomplish Its

Goal?EXPLORE --

By making objective observations of events / phenomenon in nature.

How Does Science Accomplish Its

Goal?

EXPLAIN --

By applying the principle of cause and effect.

What is

Science?

What is Chemistry?Chemistry – study of the composition

of matter, and the changes that matter undergoes

Chemistry Is . . .

It is the study of MATTER.

OR

Matter Is . . .Anything that:•Takes up space•AND has mass

What Is This ‘Stuff’ We ’ve Called Matter?One way of defining matter is One way of defining matter is

as the stuff of which as the stuff of which everything is made.everything is made.

The Branches of theChemis - Tree

InorganicOrganicOrganic

Biochem.Biochem.Analytical

PhysicalPhysical

Organic chemistry – the study of most carbon containing compounds

Inorganic chemistry – the study of all substances not classified as organic, mainly those compounds that do not contain carbon

Physical chemistry – uncovers the physical laws underlying changes in matter

Analytical chemistry – the identification of the components and composition of materials – what’s there and how much

Biochemistry – the study of substances and processes occurring in living things

1. What is matter?

Day 6 10-5

2. Branch of chemistry that attempts to determine what’s there and how much =

What is our model for scientific inquiry?

Measure the

width of your

chemistry book.

1 2 3 4 5 6 7Always go one more place than marked!

__ __ __ . __ __ones

tens

tent

hs

Measure me 6.5

1 2 3 4 5 6 7

Measure me 7.00

Always go one more place than marked!

Same for

measuring liquids!

Always go one more place than marked!

102030

22

Organic Chemistry

Explore and Explain

Biochemistry

Chemistry

Analytical Chemistry

Physical Chemistry

Science

Inorganic Chemistry

Matter

Penn State

Notebooks

Review section 1.1 and complete #s 1, 2, 5, 6, and 7 on page 5 – Hand in before leaving

1. Stay in your seat and get your Chapter # 1 test out.

Day 1 10-6

1. Calculate and record your test percentage.

2. How did you prepare for the test (Be Specific!)?

3. Study (preparation) Plan for next test?

4.Set a goal:

A: you must improve by at least 2 percentage points.

B, C, or D: you must improve by at least 3 percentage points.

F: you must pass Day 1 10-6

What are the 5 branches of chemistry?

Inorganic

OrganiOrganicc

BiochemBiochem..Analytica

l

PhysicaPhysicall

A – small graduated cylinder

B – Big graduated cylinder

C – person

Read section 2 of chapter 3 and complete #s 23-33 on page 82

1. Get your lab out. What mini-experiments do you have left?

Day 6 9-30

1. Finish lab and complete postlab – lab packets are due tomorrow!

2. All make up work is due by Thursday 10-2!!!

3. Notebook Checks – volunteers today

Day 6 9-30