Transcript Different Kinds of Mixtures

Refresh –
PP
Pp
Pp
pp
Answer this Review
Question in your
science notebook
Match the following genotypes with an example
1. Homozygous dominant
A. Pp
2. Heterozygous
B. pp
3. Homozygous recessive
C. PP
Set –
Get ready for today’s learning activity
• List the mixtures from
the jars lab & discuss
how you could
determine that each
were mixtures.
Hint: Look back at your science
notebook for the Jars Lab activitiy.
Now…Take notes on today’s lesson.
Different Kinds of Mixtures
There will be lots of new
vocabulary today that you
will need to remember.
Follow along with the notetaking guide.
At the end of the lesson, you need to be able to
explain the differences in the types of mixtures
discussed in the lesson and give an example.
Mixing it up
With Mixtures
8th Grade Science
Use with Note-taking Guide
Questions & Lesson Guide for
Mixture Lesson
+
=
• They
are substances held together by
physical forces, not chemical.
• Can be separated physically.
• Solutions are one kind of mixture.
• Solutions are mixtures of two or more
substances that are spread out evenly.
• Example: salt - water solution
• The substance to be dissolved.
(salt)
• The substance doing the dissolving.
(water)
Images are from http://www.chem4kids.com
Concentration of Solutions
• Concentrated means strong
examples; frozen orange juice in a can,
powdered milk, can of soda,
• Diluted means weak
examples; orange juice mixed in jug with
water, powdered milk mixed with water,
soda in melted ice
Solutions are
homogeneous
mixtures
Because they look the SAME throughout the mixture.
• Uniform
Distribution
(can’t pull stuff
out)
• Example: Sugar
and Water
• The substances are
not uniformly
mixed. (can pull
pieces out)
• Example: Sand in
a glass of water.
• Are heterogeneous mixtures
consisting of parts that are visible
to the naked eye.
• Substances will settle over time.
Example: the ingredients in salad dressing
Directions:
Shake well
before
using.
• Particle sizes are in between the size of
particles found in solutions and suspensions .
• Can
be mixed and remain evenly distributed
without settling out.
Colloids are
homogeneous
mixtures
Because they look the SAME throughout the mixture.
Assess –
How much did you learn?
• Name the 3 kinds of mixtures?
• How can you tell the mixtures apart?
How is their appearance different?
• Give an example of each.