1.
2.
Have name card on desk.
Have textbook, binder/notebook, calculator, and signed portion of letter on desk.
3.
4.
5.
6.
7.
What is chemistry?
How have you encountered/experienced chemistry today?
What are the major parts of the scientific method?
Write two examples of a qualitative observation, and two examples for a quantitative observation.
The two main types of products from the scientific method are _____ and ______.

1.
Have name card on desk.
2.
Have textbook, binder/notebook, calculator, and signed portion of letter on desk.
3.
What is chemistry?
4.
How have you encountered/experienced chemistry today?
5.
What are the major parts of the scientific method?
6.
If a stack of 7 quarters is 1 inch high, how many dollars are in a stack that is 8 feet tall?
7.
An average tree makes 2 x 10 5 toothpicks. Toothpicks are packaged 50 in a box. Each package costs 0.59. How much will it cost in dollars to buy all the toothpicks from 1 average tree?
8.
2 +3(x+5) -7 = 327. What is x?

Review scientific method and demonstration
Practice identifying different aspects of the scientific method.
Describing Matter: States and Changes
Classifying Matter
Brief History of Chemistry
The Atom
HOMEWORK
Read pgs 4-9
Section Review pg 9: 2-13 do NOT need to write questions, only answers.
- Bring a Ziploc bag with cereal. Take a picture of the nutritional facts.

1.
2.
Have name card on desk.
If you did not have a calculator last week, check in with me at the front.
3.
4.
5.
6.
Boron is a good conductor of electricity at high temperatures. What sort of observation is this?
Oppositely charged particles attract each other. Is this a law, theory, a hypothesis, an observation?
Which state has a definite volume, but no definite shape? Explain why by discussing about atoms and the attractive forces.
What are some evidence of a chemical change?

-
-
-
-
-
-
Review changes of matter and demonstration
Go over homework and workbook assignment
Activity on classifying matter
Classifying Matter
Brief History of Chemistry
The Atom
HOMEWORK
-
-
Read pgs 21-28
Section Review pg 28: 1,3-9, 11,13 do NOT need to write questions, only answers.

1.
2.
Have name card on desk.
If you did not have a calculator last week, check in with me at the front.
3.
4.
5.
6.
Boron is a good conductor of electricity at high temperatures. What sort of observation is this?
Oppositely charged particles attract each other. Is this a law, theory, a hypothesis, an observation?
Which state has a definite volume, but no definite shape? Explain why by discussing about atoms and the attractive forces.
What are some evidence of a chemical change?

-
-
-
-
-
-
Review changes of matter and demonstration
Go over homework and workbook assignment
Activity on classifying matter
Classifying Matter
Brief History of Chemistry
The Atom
HOMEWORK
-
-
Read pgs 21-28
Section Review pg 28: 1,3-9, 11,13 do NOT need to write questions, only answers.

1.
If you did not have a calculator last week, check in with me at the front.
2.
Classify the following as either matter, not matter, or not sure: peanut butter, water, fish, light, garbage, time, motion, the human brain, a feeling, carbon dioxide, air, yourself, an idea, tree, energy.
3.
Classify as either a physical or a chemical change: squeezing oranges to make orange juice; an iron nail rusting; adding sugar to iced tea; making popcorn; lighting a match.
4.
Classify if the following has a homogeneous or a heterogeneous distribution: water with ice; chicken noodle soup; a bowl of lucky charms; a supreme pizza; water with food coloring; a bag of skittles; a bar of chocolate

-
-
-
-
-
-
Prep for Cereal Activity
Review Classification Activity and lecture.
Properties of Matter
Describing Matter using numbers
Significant Figures
Wrap up Chapter 1
HOMEWORK
-
-
Read pgs 10-19
Section Review pg 28: 1,3-9, 11,13 do NOT need to write questions, only answers.

1.
What is a pure substance that is made of only one kind of atom?
2.
What is a pure substance that is made up of more than one kind of element?
3.
A mixture is a combination of two or more substances/ingredients that are [CHEMICALLY,
PHYSICALLY] combined.

1.
If you did not have a calculator last week, check in with me at the front.
2.
Classify the following as either matter, not matter, or not sure: peanut butter, water, fish, light, garbage, time, motion, the human brain, a feeling, carbon dioxide, air, yourself, an idea, tree, energy.
3.
Classify as either a physical or a chemical change: squeezing oranges to make orange juice; an iron nail rusting; adding sugar to iced tea; making popcorn; lighting a match.
4.
Classify if the following has a homogeneous or a heterogeneous distribution: water with ice; chicken noodle soup; a bowl of lucky charms; a supreme pizza; water with food coloring; a bag of skittles; a bar of chocolate

1.
If you did not have a calculator last week, check in with me at the front.
2.
Get a workbook. Open to page 1. Answer questions 2 –
25. Skip #24. Answer on warmup paper.

-
-
-
-
-
-
Prep for Cereal Activity
Review Classification Activity and lecture.
Properties of Matter
Describing Matter using numbers
Significant Figures
Wrap up Chapter 1
HOMEWORK
-
-
Read pgs 10-19
Section Review pg 28: 1,3-9, 11,13 do NOT need to write questions, only answers.

1.
What is a pure substance that is made of only one kind of atom?
2.
What is a pure substance that is made up of more than one kind of atom?
3.
A mixture is a combination of two or more substances/ingredients that are [CHEMICALLY,
PHYSICALLY] combined.

1.
If you did not have a calculator last week, check in with me at the front.
2.
What is a pure substance that is made of only one kind of atom?
3.
What is a pure substance that is made up of more than one kind of atom?
4.
A mixture is a combination of two or more substances/ingredients that are CHEMICALLY COMBINED or PHYSICALLY MIXED.
5.
Differentiate between the two types of physical properties.
In other words, how are the two types different from one another?

-
-
-
-
Review Classification and Properties of Matter lecture.
Describing Matter using numbers
Significant Figures
Wrap up Chapter 1
HOMEWORK
Section Review pg 19: 2, 5, 6, 8-13 do NOT need to write questions, only answers.

1.
Mass measures…
2.
Weight measures…
3.
Density is the ratio of …

1.
Mass measures…
2.
Weight measures…
3.
Density is the ratio of …

1.
How is an element different from a compound?
2.
How is a mixture different from a compound?
3.
What are the four guidelines for identifying a chemical change?
4.
Differentiate between the two types of physical properties. In other words, how are the two types different from one another?
5.
How is a homogeneous mixture different from a heterogeneous mixture? Provide an example.

-
-
-
-
-
Go over Section Review 1.3
Review Classification and Properties of Matter.
Begin section on Describing Matter using numbers
Significant Figures
Wrap up Chapter 1
HOMEWORK
Read pgs 10-19

1.
How are mass and weight different?
2.
What does density measure?
3.
How is density calculated?
4.
Which weighs more: a pound of brass blocks or a pound of marshmallows? Which is more dense?
5.
What is the difference between a qualitative observation and a quantitative observation?

-
-
-
Converting Units
Significant Figures
Wrap up Chapter 1
HOMEWORK
Section Review pg 19: 2, 5, 6, 8-13 do NOT need to write questions, only answers.

1.
2.
Workbook page 5, #13 and 14
Workbook page 6, # 16-30
3.
Complete on same warmup paper from Monday

-
-
-
Converting Units
Significant Figures
Wrap up Chapter 1
HOMEWORK
Section Review pg 19: 2, 5, 6, 8-13 do NOT need to write questions, only answers.

1.
Mass measures…
2.
Weight measures…
3.
Density is the ratio of …

1.
2.
Workbook page 5, #13 and 14
Workbook page 6, # 16-30
Complete on same warmup paper from Tuesday

-
-
-
More practice on converting units
Significant Figures
Wrap up Chapter 1
HOMEWORK
Worksheet: 37b – 48, SKIP 40 abc, 42abcd
SHOW WORK, no work = no credit
HAVE CORRECT # of SIG FIGs.

1.
Solids have a definite shape and volume because the strength of the attractive forces between the atoms are strong. To which part of the scientific method does this statement belong?
2.
When solving problems of converting units, you always need the ______ ______. How do you know which part of the
_____ _____ will be the numerator and which will be the denominator?
3.
A football field is 100 yards in length. How long is a football field in meters if 1 m = 1.094 yds?
4.
How much American dollars would you need to buy a $537
Australian dollar iPhone in Australia if the exchange rate is 1
US dollar = 1.13 Australian dollars?

-
-
Go over homework
Significant Figures
HOMEWORK
Worksheet: 37b – 48, SKIP 40 abc, 42abcd, 43

1.
Solids have a definite shape and volume because the strength of the attractive forces between the atoms are strong. To which part of the scientific method does this statement belong?
2.
When solving problems of converting units, you always need the ______ ______. How do you know which part of the
_____ _____ will be the numerator and which will be the denominator?
3.
A football field is 100 yards in length. How long is a football field in meters if 1 m = 1.094 yds?
4.
How much American dollars would you need to buy a $537
Australian dollar iPhone in Australia if the exchange rate is 1
US dollar = 1.13 Australian dollars?

-
-
Go over homework: Holt pg 19 and worksheet
More practice with significant figures
HOMEWORK
Worksheet: 56-60, 65, 68-69

1.
How many significant figures?
1.234
17000000
0.00001007000
10007
0.000000000017
10700.000
2.
What are the four signs that signal a chemical change?
3.
Distinguish mass and weight.
4.
Distinguish law and theory.
5.
Distinguish elements, molecules, compounds, pure substances, and mixtures.

-
-
Go over worksheet homework
More practice with significant figures
HOMEWORK
Worksheet: 56-60, 65, 68-69

Understanding chemistry is ESSENTIAL for understanding much of the natural word, and because chemistry is central to many other disciplines

Understanding chemistry is ESSENTIAL for understanding much of the natural word, and because chemistry is central to many other disciplines

Chemistry is the study of matter.
What is matter?

What is matter?
Matter is anything that has mass and occupies space.
Essentially, matter = stuff.

If matter = stuff
And chemistry is the study of matter,
Then chemistry is the study of…

Chemistry is the study of stuff, or to be proper
Chemistry is the study of matter.

The properties of matter are determined by the properties of atoms and molecules.
What are properties?
In other words, the properties of stuff is really determined by the properties of the atoms/molecules that make up that stuff.

MAIN IDEA: properties of stuff is based on the properties of the atoms/molecules that make up the stuff.

Chemistry is the study of matter, or
“stuff.” Chemistry studies matter/stuff by looking at the properties of the atoms/molecules that make up matter/stuff.

-used in most fields of science
- scientists use it
-Involves steps to answer a scientific question
-Can be used in life or death situations
-Involves a hypothesis and observations.

4 main components
Observation
Hypothesis
Experiment
Data
Law
Theory

-
-
Describes properties
Does not rely on numbers
-
-
-
Examples
Clouds are white
Rocks are solids
Are measurements that involve NUMBERS and
UNITS
-
-
Examples
This book weighs 20 pounds.
The temperature is 78 degrees C

-
-
WHAT
Summarizes the observations
Usually does not change
-
-
WHY
Provides the underlying reason(s) for the observations
Can change as we gather more data

1. Measured amounts of acid were added to a Rolaids tablet to see whether it really consumes 41 times its actual weight of excess stomach acid.
2. Heat always flows from hot objects to cooler ones, not the other way around.
3. The universe was formed by a massive explosion that propelled matter into a vacuum.
4. Michael Jordan is the greatest pure shooter ever to play professional basketball.
5. Limestone is relatively insoluble in water but dissolves readily in dilute acid with the evolution of a gas.
6. Gas mixtures that contain more than 4% hydrogen in are potentially explosive.

States and Changes

Molecular workbench simulation

Matter can go through changes.
These changes can be classified into two categories:
1. Physical Change
2. Chemical Change

Matter can go through changes.
These changes can be classified into two categories:
1. Physical Change
2. Chemical Change
1.
Physical Change:
- These are changes in the arrangement, location, and speed of the particles.
- Ice melting, water freezing, crushing a rock.

Organizing Matter into
Different Categories

ALL matter is made up of atoms.

ALL matter is made up of atoms.
When something is made up of only one type of atoms, it is called and ELEMENT

ALL matter is made up of atoms.
When something is made up of only one type of atoms, it is called and ELEMENT.
When two or more atoms are combined, we call that a MOLECULE.

ALL matter is made up of atoms.
When something is made up of only one type of atoms, it is called and ELEMENT
When two or more atoms are combined, we call that a
MOLECULE.
When those atoms are different from one another, we call that a COMPOUND.
Note that a compound is a type of molecule.

When matter, when a stuff is made up of only one type of
ELEMENT or COMPOUND, we call that a PURE
SUBSTANCE.

When matter, when a stuff is made up of only one type of
ELEMENT or COMPOUND, we call that a PURE
SUBSTANCE.
Or, to say in another way…when stuff is made of only one ingredient (one type of element or one type of compound), we call that a PURE SUBSTANCE.

Or, to say in another way…when stuff is made of only one
“ingredient” (one type of element or one type of compound), we call that a PURE SUBSTANCE.
When stuff is made up of more than one PURE
SUBSTANCE it is called a MIXTURE.

Or, to say in another way…when stuff is made of only one
“ingredient” (one type of element or one type of compound), we call that a PURE SUBSTANCE.
When stuff is made up of more than one PURE
SUBSTANCE it is called a MIXTURE.
Note: Mixtures are physically mixed. They are not chemically combined.

When stuff is made up of more than one PURE
SUBSTANCE it is called a MIXTURE.
Note: Mixtures are physically mixed. They are not chemically combined.
If the mixture is mixed really well, if the pure substances are mixed evenly, we call that a HOMOGENEOUS
MIXTURE.

If the mixture is mixed really well, if the pure substances are mixed evenly, we call that a HOMOGENEOUS
MIXTURE.
If the mixture is not mixed well, if the pure substances are NOT mixed evenly, we call that a HETEROGENOUS
MIXTURE.

Classifying Matter based on composition

Classifying Matter based on composition
Identify each substance as a compound, element, a heterogeneous mixture, or a homogeneous mixture.
A.
white wine
B.
mercury
C.
italian dressing
D.
table sugar

Classifying Matter based on composition
Identify each as an element, a compound, a heterogeneous mixture, or a homogeneous mixture.
5.
6.
7.
1.
2.
3.
4.
Tea
Gold
Freshly squeezed orange juice
Compact disc
H
2
O
Carbon dioxide
Aluminum oxide: Al
2
O
3

Classifying Matter based on composition

Changes to matter are either physical or chemical.
Physical changes change the PHYSICAL properties of matter.
Chemical changes are based on the CHEMICAL properties of matter.

Changes to matter are either physical or chemical.
Physical changes change the PHYSICAL properties of matter.
Chemical changes are based on the CHEMICAL properties of matter.
CHEMICAL PROPERTY: describes a substance’s ability to participate and change in a chemical reaction.

Changes to matter are either physical or chemical.
Physical changes change the PHYSICAL properties of matter.
2 Types of Physical Properties:
Intensive
Extensive

2 Types of Physical Properties:
Intensive
Extensive

2 Types of Physical Properties:
Intensive
Extensive
Intensive: does NOT vary with amount of sample.
Examples: smell, color, melting point, boiling point, ability to conduct a current.

2 Types of Physical Properties:
Intensive
Extensive
Intensive: does NOT vary with amount of sample.
Examples: smell, color, melting point, boiling point, ability to conduct a current.
Extensive: DOES vary with amount of sample.
Examples: Mass, weight, volume.

Intensive vs. Extensive Physical Property
Intensive does NOT vary with amount of sample.
DOES vary with amount of sample.
Extensive
Examples: smell, color, melting point, boiling point, ability to conduct a current, etc.
Examples: Mass, weight, volume, etc.

Describing Matter Using Numbers
Measuring Extensive Physical Property

Volume – amount of space than an object takes
Mass – measures amount of matter in an object.
Mass is NOT the same as Weight
Weight = is a measure of force. Weight measures the amount of gravity that is pulling an object.

Speed
Area
Volume
Density
Derived Units

Powers of 10

1.
Convert 253 mL into liters
2.
Convert 1258 cm into meters
3.
Convert 15g to kilograms
4.
Convert 1254 kilocalories to calories
5.
How many seconds pass in 5.25 hours?

Converting Units and Dimensional Analysis
1.
A pin is 2.85 cm in length. What is its length in inches if there are 2.54 cm in 1 in?
2.
A pencil is 7.00 in. long. What is its length in centimeters? 2.54 cm per 1 in.
3.
You want to order a bicycle with a 25.5 in frame, but the sizes in the catalog are given only in centimeters.
What size should you order? 1 in = 2.54 cm.

Converting Units and Dimensional Analysis
1.
A student entered a 10.0 km. How long is the run in miles?
1000 m = 1 km
1 m = 1.094 yd
1 mi = 1760 yd

Converting Units and Dimensional Analysis
1.
The speed limit on many highways in the United States is 55 mi/hr. What number would be posted if we used kilometers per hour?
1 mi = 1760 yd
1 m = 1.094 yd

Converting Units and Dimensional Analysis
1.
A Japanese car is advertised as having a gas mileage of
15 km/L. Convert this rating to miles per gallon.
1 m = 1094 yd
1 mi = 1760 yd
1 L = 1.06 qt
4 qt = 1 gal

Where to Round

Precision vs. Accuracy
Accuracy
Precision

Precision vs. Accuracy
Accuracy – how close a measurement is to the actual value.
Precision – how close the measurements are to other qunatitative data.

1.
All nonzero #’s ARE significant.
2.
Interior zeroes ARE significant.
3.
Leading zeroes ARE NOT significant.
4.
Trailing zeroes AFTER a decimal point ARE significant.
5.
Trailing zeroes BEFORE a decimal point ARE significant
6.
Trailing zeroes without a decimal point?

1.
2.
3.
4.
5.
218 kg
0.025 L
200 g
1.05 cm
200.0 mg