September 19th

Today's Focus:
Review for Phase Changes and States of Matter Notes
Checkpoint 4 and Retake for Checkpoint 3 on Tuesday - 9/20

Phase Changes and States of Matter Review:

1.       Phase Changes: PHASE CHANGES OF MATTER WEBQUEST J

2.       Quizlet Review: https://quizlet.com/95789179/scatter

3.       Phase Change Activity: http://www.kentchemistry.com/links/Matter/PhaseChangesA.htm

4.       Phase Changes of Matter Cloze Reading:

http://www.dontstoplearning.com/ks3science/8Ie_Changing_States.htm

5.       Particle Theory of Matter Cloze Reading:

http://www.dontstoplearning.com/ks3science/8Ie_Particle_Theory_Changes_of_State.htm

6.       States of matter: http://www.harcourtschool.com/activity/states_of_matter/index.html

7.       Phase Change Quiz:

a.       http://glencoe.mheducation.com/sites/007874637x/student_view0/chapter12/section4/self_check_quizzes.html

b.      http://ths.sps.lane.edu/chemweb/unit4/problems/phasedia/    (1-8 ONLY)

Online Practice Game (Pure Substances and Mixtures)

http://www.kubbu.com/student/?i=1&a=45946_mixtures_vs_pur

September 13th

Today's focus: Chemical and Physical Changes

Video: •http://studyjams.scholastic.com/studyjams/jams/science/matter/changes-of-matter.htm

Students were given an assessment on Chemical and physical changes after the video:

Name:_____________________  Date:________________________ Class Period:___   Score:___%

Study Jams Video Quiz (Chemical and Physical Changes)

1.        When does a physical change occur? ___

a.       When molecules combine to form a compound

b.      When a new element is created

c.       When the size, shape, or state of matter changes

d.      When elements combine to form a molecule

2.       Which type of change can be reversed? ___

a.       A physical change

b.      A chemical change

c.       A molecular change

d.      An electric charge

3.       Which of the following would cause the molecules in matter to change? ____

a.       A moderate climate

b.      Pressure

c.       Motion

d.      Extreme heat

4.       If a substance changes color, what has most likely happened? _____

a.       A pressurized change has taken place

b.      A chemical change has taken place

c.       A physical change has taken place

d.      Nothing has taken place

5.       Stepping on a bag of potato chips would cause which type of change? _____

a.       Mechanical

b.      Thermal

c.       Physical

d.      Chemical

6.       Which of the following is a clue that a chemical change has taken place? ____

a.       A gas forms when the change takes place

b.      The substance is smaller than it was before the change took place

c.       The substance has been shaken up

d.      The substance looks the same as it did before the change took place.

7.       What is the difference between a physical change and a chemical change? _____

a.       A physical change can only occur in liquids, and a chemical change can occur in a solid, a liquid, or in a gas.

b.      A physical change is when the size, shape, or state of matter changes, and a chemical change is when molecules of matter change to form a new substance.

c.       A physical change is when the molecules of matter change to form a new substance, and a chemical change is when the size, shape, or state of matter changes.

d.      A physical change can occur in a solid, liquid, or a gas, and a chemical change can only occur in a liquid.

After the Study Jams Video: Students completed a Lab Activity: A sticky situation

•https://www.cpet.ufl.edu/wp-content/uploads/2013/03/Differentiating-between-physical-and-chemical-changes.pdf

September 12th

Today students were taken to the computer lab to take Checkpoint Quiz #3 on Pure Substances and Mixtures. The Checkpoint Quiz #3 can be found in USA Test Prep. The cutoff date is 9/16.
http://www.usatestprep.com/member-login
After the assessment, students were given the opportunity to complete their notes on Chemical and Physical Changes Notes from Friday - 9/9.
After the completion of their notes, students were given an opportunity to go on USA Test Prep and practice links on Chemical and Physical Changes.

Week of September 6th - 9th

TUESDAY – SEPTEMBER 6^TH

Period 5 & 6

Vocabulary Chart Review and Review Questions

Students will use the textbook to completing the vocabulary chart. Use pages 90 - 104.

 WEDNESDAY – SEPTEMBER 7^TH

a.       Mixtures Worksheet (Questions 1-5) Please write on your own paper or you may print sheet out from blog link here:  http://kms.kcs.k12.nc.us/common/pages/DisplayFile.aspx?itemId=7019628

b.      Mixtures, Compounds and Solutions Comparison Chart Sheet (Please write on your own paper or you may print from the link here):file:///C:/Users/DSR13624/Downloads/Chemistry%20Matter%20Wks.pdf

THURSDAY – SEPTEMBER 8^TH

Elements, Compounds and Mixtures Review Sheet ( Please remind students that Checkpoint Three on Pure Substances and Mixtures will be given on the following Monday

FRIDAY – SEPTEMBER 9^TH

a.       Guided Notes on Chemical and Physical Changes (Use textbook pages 48 – 55)

b.      Practice Sheet on Chemical and Physical Changes.

Tuesday – September 6^th

Name:_________________________________ Class:___________________________________

Date:_________________________________

Pure Substances and Mixtures Vocabulary Chart Review and Review Questions (Use pages 90 – 104)

Word	Definition/Explanation	Example and Illustration
Element
Pure substance
Compound
Mixture
Solution
Solute
Solvent
Concentration
Solubility
Suspension
Colloid
Word	Definition/Explanation	Example and Illustration
Distillation
Magnet
Centrifuge

Review Questions:

1.       Explain why an element is a pure substance.

2.       What are three physical properties used to identify compounds?

3.       Compounds can be broken down into what types of substances?

4.       Why do substances in a mixture keep their identities?

5.       How does brass differ from zinc?

6.       How does the solubility of gases change with temperature?

7.       How can the particle of a suspension be separated?

Friday – September 9^th

Name:_____________________________ Date:____________________________

Chemical and Physical Changes

Chemical Changes are Examples include Composition of matter in chemical changes: Signs of chemical changes include	Physical Changes are Examples include Composition of matter in physical changes
Can physical and chemical changes be reversed?
Summary of what you have learned:

Name:_________________________ Date:

Chemical and Physical Changes Practice Sheet:

Label each process as a physical or chemical change:

a. perfume evaporating on your skin
b. butter melting
c. wood rotting
d. charcoal heating a grill
e. autumn leaves changing color
f. a hot glass cracking when placed in cold water
g. melting copper metal
h. burning sugar
i. mixing sugar in water
j. digesting food

2. Which of the following would NOT be a physical change?

a. freezing water to make ice cubes
b. melting gold to make jewelry
c. burning gasoline in a lawnmower
d. boiling water for soup
e. tearing a piece of aluminum foil

3. Which of the following is NOT a physical change?

a. grating cheese
b. melting cheese
c. fermenting of cheese
d. mixing two cheeses in a bowl

4. Which are physical and which are chemical changes?

a. boil
b. burn (combustion)
c. condense
d. corrode
e. crumple
f. ferment
g. melt
h. rust
i. crush
j. freeze
k. oxidize
l. tarnish
m. explode
n. grind
o. rot
p. vaporize
q. photosynthesis
r. sublimation

5. If a certain mixture is homogeneous, you would properly conclude that the physical properties and the composition:

a. are different from one part of the sample to another
b. vary smoothly from top to bottom of the sample
c. are the same in every small volume element from the sample
d. none of these

6. Label each process as a physical or chemical change:

a. Moth balls gradually vaporize in a closet
b. hydrofluoric acid attacks glass (used to etch glassware)
c. A chef making a sauce with brandy is able to burn off the alcohol from the brandy, leaving just the brandy flavoring
d. Chlorine gas liquefies at -35 °C under normal pressure
e. hydrogen burns in chlorine gas

7. Label each process as a physical or chemical change:

a. fogging a mirror with your breath
b. breaking a bone
c. mending a broken bone
d. burning paper
e. slicing potatoes for fries
f. mixing sugar with coffee
g. frying chicken
h. a nail rusting
i. paper ripping
j. wood burning
k. mixing water and food coloring
l. food molding (rotting)
m. writing on paper
n. dyeing fabric

8. Is concrete a heterogeneous mixture?

September 2nd

Today students will be in the computer lab to complete a webquest on Classifying Mixtures:

Name __________________________________________   Date __________________

Classifying Mixtures Web Quest

Log on to my website to find the websites needed to complete this activity.  You will find the links under chemistry.

Part 1:  What is a mixture?

Use this website to answer the following questions:

http://education.jlab.org/qa/mixture.html

A mixture is a substance made by ___________________________________________________________ in such a way that _____________________________________. A mixture can usually be _________________________ back into its __________________________ components.

Some examples of mixtures are:

___________________________

___________________________

________________________

Part 2:  What is a solution? 

Use this website to answer the following questions: http://www.ducksters.com/science/chemistry/solutions_and_dissolving.php

A solution is a __________________________________________________ where one substance is ______________________________ into another. A solution is the _____________________________, throughout which makes it a homogeneous mixture. 

A solution has certain characteristics:

• It is _________________________, or homogeneous, throughout the mixture
• It is ______________________________________________ over time or settle
• The solute particles are so small _______________________________________________ by filtering
• The solute and solvent molecules _______________________________ distinguished by the naked eye
• It _______________________________ scatter a beam of light

Example of a Solution 
One example of a solution ______________________________ which is a mixture of water and salt. You __________________________________________ and the salt and water will stay a solution if left alone. 
Parts of a Solution

• Solute - The solute is the substance that is ________________________________________________. In the example above, the _________________________ is the solute.
• Solvent - The solvent is the substance that ________________________________________________.   In the example above, the ___________________________ is the solvent.

Concentration 
The concentration of a solution is the __________________________________ of the solute to solvent. If there is  _________________________________ in a solution, then it is "concentrated". If there is __________________________________________ solute, then the solution is said to be "diluted." 

Part 3:  Solutions can be heterogeneous or homogenous.  

Watch this video clip on heterogeneous and homogenous.   

http://www.youtube.com/watch?v=5WlAFh8pz8w

From the video give an example of a heterogeneous and homogenous mixture.

a.   heterogeneous:  ______________________________________________

b.   homogenous: _________________________________________________

S

Part 4:  Suspensions and Colloids

Use this website to answer these questions:

http://www.ducksters.com/science/chemistry/chemical_mixtures.php

Suspensions (heterogeneous) 
A suspension is a mixture between a _______________________________________. In this case the ___________________________________________. The particles and the liquid are mixed up so that the ______________________________________. They are ______________________________ in the liquid. A key characteristic of a suspension is that the __________________________________________________ if left alone. 
An example of a suspension is a mixture of __________________________________. When mixed up, the sand will _________________________________ the water. If left alone, the sand will _______________________________________________. 

Colloids (heterogeneous) 
A colloid is a mixture where _____________________________________________. They appear very similar to ___________________________, but the particles are _______________________________________ rather than ___________________. The difference between a colloid and a suspension is _________________________, they will stay suspended or float. 
An example of a colloid is _________________________________. Milk is a mixture of __________________________________________ and _________________________________in water. 
Colloids are generally considered _________________________________ mixtures, but have some qualities of __________________________________ mixtures as well. 

Part 5:  Review

Watch this TedEd Clip on Mixtures:

http://www.bbc.co.uk/bitesize/ks3/science/chemical_material_behaviour/compounds_mixtures/activity/

Take this quick quiz to see what you know:

Q1. Large particles settle out on standing

   Suspension

   Colloid

   Solution

Q2. Medium size particles settles out on standing, scatters light

   Suspension

   Colloid

   Solution

Q3. Very small particles does not settle out on standing

   Suspension

   Colloid

   Solution

Q4. Chocolate milk

   Suspension

   Colloid

   Solution

Q5. Fog

   Suspension

   Colloid

   Solution

Q6. Smoke

   Suspension

   Colloid

   Solution

Q7. Muddy water

   Suspension

   Colloid

   Solution

Q8. Orange juice

   Suspension

   Colloid

   Solution

Q9. Whipped cream

   Suspension

   Colloid

   Solution

Q10. Sugar water

   Suspension

   Colloid

   Solution

Q11. Salt water

   Suspension

   Colloid

   Solution

Q12. Oil and vinegar salad dressing

   Suspension

   Colloid

   Solution

Q13. Milk

   Suspension

   Colloid

   Solution

Q14. Marshmallow

   Suspension

   Colloid

   Solution