Welcome to Chemistry I !!Mrs. Bechtum blogs.waukeeschools.org/chemistry

Science is collaboration.

“Alone we can do so little; together we can do so much. “

– Helen Keller

Science is the study of cosmic order… or how things fit together.

Problem-Solving Framework

“What am I trying to accomplish?”

“What strategies am I using?”

“How well am I using the strategies?”

“What else could I do?”

Puzzle: Trying to put together the puzzle/ produce an image. Edges first… faces… shapes… Have I separated out the edge pieces correctly Would putting together the shapes or colors work better? Could I

look at the box as a model?

Course Syllabus

Found on the course blog https://blogs.waukeeschools.org/chemistry

Highlights Office Hours Course Summary Required Materials Assessment

50 points per unit spread over 3 assessments (see specifics on syllabus)

65% Tests 20% Labs 15% Formative Assessments

Classroom Expectations Follow the standards set forth by WHS (in student handbook)

Respect ….Responsibility ……Trustworthiness …and Safety!

Do not bring food or drink into class. This is a working lab.

Wear appropriate clothing/shoes during lab days.

Come in for extra help when you are struggling in class (self –advocate).

Communicate with the instructor when extenuating circumstances arise.

Follow the course outline.

It is YOUR responsibility to set up a time to make up missed exams, labs, and formative assessments.

Technology guidelines (see board).

Course Outline

*Subject to change*

Changes will be noted clearly in class if/when arise.

Topic; Assignment; Special Notes; Reading Assignment

Please keep up with homework and reading.

Come ask questions when they arise!

Highlight/note important dates (Chapter 1 test this Wednesday!).

QUESTIONS?

Guess Who?

Objective: To communicate with the other students in the class to determine whose card you have.

Take 3 minutes to…

Answer the following questions on your note card. (DO NOT PUT YOUR NAME ON THE CARD OR TALK WITH CLASSMATES!)

A single concern of yours. Concerns can range from big concerns (What to do about global warming) to small concerns (what to eat for lunch).

Your favorite something, can be anything from color to food to movie. TWO words describing your personality.

Flip your card over and sit quietly when done.

Example

When my son learns to open doors!

Vancouver Island, BC

Supportive

Adventurous

MOVE IT!!

The objective is to communicate with other students in the class to determine whose card you have.

To eliminate someone from the “game” you must find the person whose card you have. (BE HONEST!)

Once you eliminate someone you can claim any cards they have and continue eliminating other students.

Once eliminated take a seat. The person with the most cards after 5 minutes…

WINS!!

(collect cards)

Chemistry

The study of the composition, structure, and properties of matter, the processes that matter undergoes.

Understanding the microstructures to explain the macrostructures.

What is Matter?

Mass A measure of the amount of matter

Volume Amount of space an object occupies

Matter Anything that has mass and takes up space Matter comes from the Latin word meaning

“material” or “stuff”.

Building Blocks of Matter

Atom The smallest unit of an element that maintains the chemical identity of that

element.

Element A pure substance that cannot be broken down into simpler, stable substances and

is made of one type of atom. Silver (Ag), Iron (Fe), Sodium (Na), Sulfur (S)….

Compound A substance that can be broken down into simple stable substances. Each compound is made from the atoms of two or more elements that are

chemically bonded. Example: Water, made of two elements -hydrogen and oxygen

Molecule Smallest unit of an element or compound

States of Matter

What happens when a cube of ice is melted?

Nanoscopic Molecules are very close together and densely packed

Molecules are closer together but still very separated

Molecules are very far apart

Shape Will form its own shape and be rigid or fixed

Will take the shape of the container

Will take the shape of the container

Volume Has a constant volume independent of the size of the container

Has a constant volume independent of the size of the container

Takes the volume of the container

Particle motion Local vibration in a fixed position, no long-range motion

Random motion throughout the container

Random motion throughout the container

Check for Understanding

Players on a soccer team could be found in three places: 1) on the field playing, 2) on the bench sitting with their team, or 3) back at their respective homes. Explain which state of matter could be described by each situation.

Are there problems with the analogy of the soccer team to the states of matter? Explain where this analogy might not be appropriate.

What Do You Think?

Is it easier to separate milk from coffee or milk from a bowl of cereal, and why?

Breakdown of Matter

Practice

Predict whether the following mixtures would be heterogeneous or homogeneous:

Orange juice (with no pulp)

Clear ocean water

A piece of raisin bread

The gas inside a helium balloon

A pond with some algae

Practice

Label each type of material as a mixture (M) or a pure substance (PS).

If the material is a mixture (M) state whether it is homogeneous (S) or heterogeneous (H).

If the material is a pure substance (PS), state whether it is an element (E) or a compound (C).

Practice

Material Mixture (M) orPure Substance (PS)

Homogeneous (S) or Heterogeneous (H)

Element (E) or Compound (C)

Vinegar and Oil

Block of Iron

Ice

Sugar Water

Table Salt

Blood

Physical Properties Physical Property: A characteristic that can be

measured or observed without changing the sample’s composition.

-Density -Hardness -Shape

-Color -Melting Point -Taste

-Odor -Boiling Point -Mass

-State -Length -Volume

List the Physical Properties

Looking at the object in front of you, list some physical properties.

Types of Physical Properties

1. Extensive: Depends on the amount of substance present (mass, volume, amount of energy).

2. Intensive: Does NOT depend on the amount of substance present (density, melting point, boiling point).

Chemical Properties

Chemical Property: The ability of a substance to combine with or change into one or more new substances. Ability of charcoal to burn.

Check for Understanding

Physical or Chemical Property?

1. Iron is more dense than aluminum.

2. Bubbles can form when vinegar and baking soda are mixed.

3. Magnesium burns brightly when ignited.

4. Oil and water do not mix.

5. Mercury melts at 39 C.

Physical Change

Fold a piece of paper (event).

Does the paper still have its original physical properties or has a new substance been produced?

Physical Change

To make nacho cheese dip, you have to melt the cheese (event).

Does the cheese still have its original physical properties or has a new substance been produced?

Physical Changes

Physical Change: A change that alters the substance without changing its composition. A change in size, shape, volume, or appearance.

Examples: Cutting Paper Crumpling Aluminum Breaking a Pencil Water going from solid to liquid.

Chemical Change

Holding a match to a piece of paper will cause the paper to burn (event).

Does the paper still have its original physical properties or has a new substance been produced?

Chemical Changes:http://www.schooltube.com/video/2fa9cb3e39064832b31d/Reaction-of-Sodium-and-Chlorine

Chemical Change: A process that involves one or more substances changing into new substances (ie. Chemical reactions). The new substance has different compositions and

properties than the substances that combined to form it.

Terms to describe chemical change = explode, rust, oxidize, corrode, tarnish, ferment, or burn.

Chemical Change

A metal mailbox is made of iron is exposed to oxygen (water contains oxygen).

Does the mailbox still have its original physical properties or has a new substance been produced?

Chemical Change

Food you eat goes through digestion (event).

Does the food still have its original physical properties or has a new substance been produced?

Indicators of a Chemical Change

-New Color

-Heat is given off or absorbed (temperature change)

-Bubbles (gas) are produced

-Precipitate (solid) forms

-Presence of an odor

Change is Change!Predict what type of change is occurring with the following:

Burning Wood

Cutting Paper

Developing Film

**Be sure you can EXPLAIN your prediction!**

Textbooks

Please grab a textbook and place the number next to your name on the class roster.

For tomorrow…

Complete PART 1 of your Unit Packet

Check out the blog website!

Read Chapter 1 (Sec 1-2) pages 3-14.

WEAR or bring CLOSED TOED SHOES for lab tomorrow!

Have a WONDERFUL afternoon!!

Formative Assessment 1

Check for Understanding 1

Action Steps:

Readings

Notes (Blog)

Unit Packet (Practice)

Physical and Chemical Lab

For tomorrow…

Complete Lab

Complete PART 2 in Unit Packet

Read Chapter 10: pages 329-351

Review for Chapter 1 (Sections 1-2) Test (Test is TOMORROW!)

Have a WONDERFUL afternoon!!