friday, october 9 objective: students will be able to differentiate between the different states of...

Friday, October 9

Objective: Students will be able to differentiate

between the different states of matter.

Quick Chem: What are the three states of matter?

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Friday, October 9




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October 9, 2009

AGENDA:1 – Quick Chem and

Discussion2 – Brain Pop3 – Cornell Notes4 – Graphic Organizer

Today’s Goal: To differentiate


HOMEWORK: 1. Read Chapter 3.1

pages 71-75. Answer questions1-4 on page 75.

2. Make for vocab flashcards for the section.

Cornell Notes Ms. Barkume10/9

States of MatterWhat are the 3 states of matter?

What are the properties of the states of matter.

Solid, Liquid, Gas

Summary: Finish in Class

Solid Retain fixed volume; rigid particles locked into place.

Definite volume.

Not easily compressible; little free space between particles.

Definite shape.

Does not flow easily; does not expand when heated.

Particles vibrate or move slowly; does not move from place to place

Liquid Assumes shape of its container; particles slide past one another. Indefinitie volume.

Slightly compressible; some space between particles.

Indefinite shape.

Flows easily; expands some when heated.

Vibrates; particles move past one another linearly.

Gas

(Vapor)

Assumes shape of its container; particles move past one another fast.

Indefinite volume.

Easily compressible; lots of free space between particles. Indefinite shape.

Flows easily; expands a lot when heated.

Particles move fast at high speeds and no pattern to movement.

Cornell Notes Ms. Barkume10/9

States of Matter Cont’d

What is the 4th state of matter?

What is the microscopic view of each state?

Plasma Partially Ionized Gas; free electrons are not bound to an atom or molecule.

Check it out!

Summary (finish for homework or in class if time permits)

http://www.chem.purdue.edu/gchelp/atoms/states.html

Percent Error

Percent Error: (Accepted Value – Measured Value) x

100 Accepted Value

Example: Accepted value = 1.2 Measured value = 1.3 (1.2 – 1.3) x 100 = 8.3 % 1.2Actual Density of H2O = 1.00 g/mL

Steps of Inquiry

Ask a QUESTION

Make a PROCEDURE

Interpret RESULTS

Make a Conclusion

Guides

Influences (data)

Using data to:

Quiz (10 pts)

What is the volume of water in the graduated cylinder? Measure to 2 figures (numbers)

Density

Density is a physical property of matter.

Defined as the amount of mass per unit of volume.

Density = mass (grams)volume (mL)

Reading Graduated Cylinders

Graduated cylinders are used to measure volume of liquids.

How much liquid is the graduated cylinder?


Graduated cylinders are used to measure volume of liquids (in mL).

How much liquid is the graduated cylinder? The curved line is

the meniscus. Read the volume from the bottom of the curve.

The volume of the liquid is 35 mL.


Graduated cylinders are used to measure volume of liquids (in mL).

To read, find the lines labeled with numbers

Count the steps between Divide

10/10 =1

Every tick mark is 1mL


Read at the meniscus10/10 =1

Every tick mark is 1mL

Volume = 35 mL

1/5 = 0.2

Every tick mark is 0.2 mLVolume

is 6.2 mL

Types of Data• Data does not equal scientific evidence• Previous knowledge + DATA = Scientific

Evidence• Qualitative Data: information that describes color,

odor, shape, or some other physical properties• Quantitative Data: Numerical information that

tells you how much, how little, how big, how tall or how fast.

• Data Tables organize data for display and understanding.

September 14, 2009

AGENDA:1 – Quick Chem and

Discussion2 – Get in lab groups3 – Safety Activity4 – Data and Data

Tables5 – Wrap Up

Today’s Goal: To understand the

importance of lab safety and lab safety rules

HOMEWORK:1. Complete lab

safety worksheet

Data Table

Data Tables display data Previous knowledge + DATA = Scientific

Evidence Qualitative Data: information that

describes color, odor, shape, or some other physical properties

Quantitative Data: Numerical information that tells you how much, how little, how big, how tall or how fast.

Understanding Lab Safety

• You should NEVER try to taste any of the substances.

• You should ALWAYS wear your lab goggles. Some of the lab materials are skin, eye irritants.

• Always dispose of the laboratory materials appropriately.

• Wear appropriate clothing and shoes.• REMEMBER the class rule: FOLLOW

DIRECTIONS!

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