Introduction to Chemistry
Substances, Mixtures and Solutions
Day 3
March 11
DRQ : What is a mixture? Make an
educated guess about the difference
between a mixture and element.
Activities:
• DRQ\Review DRQ
• Demonstrations
• Review Chapter 9 pre-reading activity
• Vocabulary
Homework: Crossword puzzle
DRQ: What is a mixture? Make an
educated guess about the difference
between a mixture and substance.
• A mixture is a combination of two or
more elements or compounds
• The difference between a mixture
and a substance is that a mixture is
a combination of different
substances.
– A substance is a “pure” sample of a
compound or an element
Demonstrations
• Substances
– Salt (NaCl)
– Sugar (C12H22O11 )
– Distilled water (H2O)
– Sand (SiO2 Silicon dioxide)
• Mixtures
– Salt water
– Sugar water
– Sand and water
Vocabulary for 9.1
• Substance Matter that is an element or a
compound
– Element Substance in which all the atoms are
alike
– Compound Substance made of the combined
atoms of two or more elements
• Mixture: Two or more substances together
– Heterogeneous mixture A mixture in which
different parts can be easily distinguished.
– Homogeneous mixture A mixture in which
different materials are blended evenly so that the
mixture is the same throughout; also called a
solution
Vocabulary for 9.1 cont.
TYPES OF MIXTURES
• Solution A homogeneous mixture containing
particles so tiny that they cannot be seen even
with a microscope; particles in a solution don’t
settle and don’t scatter light
• Suspension A heterogeneous mixture
containing a liquid in which larger particles
eventually settle out.
• Colloid A heterogeneous mixture containing tiny
particles that never settle out; examples milk and
gelatin
Vocabulary for 15.1
• Solute The substance being dissolved in a solvent
• Solvent The substance that dissolves a solute
• Solubility The amount of a substance (solute) that will
dissolve in a solvent
• Saturated A solution that has dissolved all the solute it can
normally hold at a specific temperature
• Unsaturated A solution that is capable of dissolving more
solute at a specific temperature
• Supersaturated An unstable solution that contains more
solute than a saturated solution can at that
Play on Quizlet
• Go to
Mrsdoughertys.wikispaces.com
or
• http://quizlet.com/794051/mixturescompounds-and-solutions-flashcards/
Day 4
March 12
DRQ: Pass around labeled items: copper foil, salt,
Aluminum foil, chalk, granite, sugar water.
Get a copy of the data table, and classify each
as an element, compound, heterogeneous
mixture or a homogenous mixture.
Activities:
•
DRQ\Review DRQ
–
Discussion questions
•
•
If you know the name of a substance how can you find
out whether it is an element?
Cornell Notes for Chapter 9.1 pgs 246-250
DRQ # 13
Substance
or mixture
Copper Foil
Element
√
√
√
Purple
Chalk
Granite
Sugar
water
Homogeneous
Mixture
√
Salt
Aluminum
Foil
Compound
Heterogeneous
Mixture
√
√
Cool Supersaturated
Solution Video
160 g solute Sodium Acetate Trihydrate
Add 30 mL water solvent
Heat to supersaturate solution
Seed crystals to precipitate cool solution to
crystallize
Discussion Questions
• If you know the name of a substance
how can you find out whether it is an
element?
Cornell Notes
– Pages 246-260
Keys to Success
– Don’t forget study questions, words to
know and the summary.
– Use the headers to get the main points
– Have complete thoughts in your notes
and your summary
If not finished in class - due tomorrow!
Day 5
March 13
• No DRQ
• Take out your Cornell Notes and
attach a rubric to them.
• If you didn’t do your homework, start
your notes now.
Grader: ___________________________ Binder owner: __________________
Is their DRQ section complete?
__< 50%
___ about 75% ______ about 90% _____ 100%
•
Notes Check if yes, nothing if no…
–
–
–
–
–
–
–
–
–
–
–
–
•
8.1 Cornell Notes
Triangle
8.3 Solids Liquids and Gases Notes/concept map
Matter and Temperature Study Guide
Behavior of Gases Notes
Gas Laws Chart
8.5 Behavior of Fluids Cornell Notes
Uses of Fluids Study Guide
DRQ table and Concept Map
Mixtures, Compounds and Solutions Pre-reading
Compounds vs. Elements
9.1 Cornell Notes
Vocab Section
– 2 crossword puzzles
Add up the check marks: _____________ out of 13 = _____________%
DRQ = ___________% Notes and Vocab = _______________%
Grade each other’s notes
•
•
•
•
•
Quiz on 9.1 postponed to Monday
Binders Due Monday
Study Vocabulary
Fix/Complete Cornell Notes
Quiz will be final grade of Marking
period
Day 4 March 20
• DRQ : On the front cart are two
heterogeneous mixtures. A
flinstones vitamin and “cheerios”.
Both claim to have Iron in them.
• How could we find out which has
more Iron?
Day 4 March 20
• Activities
– Review DRQ
– Return/Review Quiz
• Classwork/Homework
– All Mixed UP
Day 5
March 23
DRQ: Explain three ways to separate a
mixture.
Activities:
• DRQ\Review DRQ
• Check Homework, Separating
Mixtures (perform separation)
• Begin Cornell Notes pgs 254-259
• Online Separation activity
DRQ: Explain three ways
to separate a mixture.
• Magnetism
• Solubility
• Size
• Color
• Texture
• Shape
THESE ARE ALL PHYSICAL
PROPERTIES!
Day 6
March 24
DRQ : What is the difference between a
physical change and a chemical change?
Activities:
• DRQ\Review DRQ
• Ch 9.3 Chemical Changes
• Review Differences between chemical and
physical changes
• Homework: Cornell Notes pgs 254-259
DRQ: What is the difference
between a physical change and a
chemical change?
• In a physical change the matter
doesn’t change or it is reversible.
• A chemical change creates a new
type of substance or is irreversible.
The particles are broken apart and
put back together differently, making
a new substance.
Day 1
March 25
DRQ: As you know, energy cannot be
created or destroyed. This is the law of
conservation of energy. What do you
infer the law of conservation of mass
might be?
Activities:
• DRQ/Review DRQ
• Cornell Notes/Review Notes
• Study Guide…
DRQ: As you know, energy cannot be
created or destroyed. This is the
law of conservation of energy. What
do you infer the law of conservation
of mass might be?
• The law of conservation of mass is
that mass/matter is not created or
destroyed, it is only changed.
Day 2
March 26
DRQ: Make a list of physical changes that can occur in
matter. (How many can you think of?)
Activities
•
DRQ/Return Notes/Collect Homework
•
Physical Changes - List
•
Chemical Changes and Conservation of Mass
Demonstrations
•
Physical and Chemical Changes T chart activity
•
Lavoisier video clip
Homework: Study for quiz tomorrow.
DRQ: Make a list of physical
changes that can occur in
matter. (How many can you
think of?)
Antione
Lavoisier
and his wife,
and
research
assistant,
Marie-Anne
Pierette
Paulze
March 30
Day 4
DRQ: Open your book to page 416. Read
about Types of Solutions. What are three
types of solutions and an example of each?
Activities:
• DRQ\Review DRQ
• Review Mini-Quiz on Physical and Chemical
changes
• Solute, Solvent discussion (15.1)
– Notes on 15.1
Closure: 15.1 Notes Summary
Homework: How solutions form Study Guide
March 31
Day 5
DRQ: If you wanted to create a supersaturated
solution, what would you have to do?
Activities:
• DRQ\Review DRQ
• Lab activity: creating a solution, a saturated
solution and a supersaturated solution.
Closure: Cleanup and discussion
Homework: Complete lab questions and
illustrations
DRQ: If you wanted to create a
supersaturated solution, what
would you have to do?
• Make a saturated solution.
– A solution that dissolved all the solute it
can hold at a certain temperature.
• Add more solute.
• Heat it
– Because adding heat increases the
amount of solute you can dissolve
– Stir it