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Turn in LAST week’s Catalyst Sheet and Pick up papers from the front! Answer the Catalyst below: 1. Classify each as a pure substance or a mixture: A. Kool-Aid B. Copper (Cu) C. Sodium Acetate (NaC 2 H 3 O 2 ) D. Cookies and Cream Ice Cream 2. What is the law of conservation of mass?. - PowerPoint PPT Presentation
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Turn in LAST week’s Catalyst Sheet and Pick up papers from the front!Answer the Catalyst below:1. Classify each as a pure substance or a mixture:
A. Kool-AidB. Copper (Cu)C. Sodium Acetate (NaC2H3O2)D. Cookies and Cream Ice Cream
2. What is the law of conservation of mass?
Magnanimous Monday
BIG GOAL: Class average of 80% Mastery on all Tests and
Quizzes!
ExplosionPractice!
Explosion: Rapid fire questions!1. What day is today?2. What is the scientific method?3. What is the first step to the
scientific method?4. What is an experimental problem?5. What is a hypothesis?6. What is the Passaic mascot?7. What is a Pure Substance?8. What are the 2 types of Pure
Substances?9. Name 3 elements.10. Name 2 Compounds.11. What is a Mixture?12. What are the 2 types of Mixtures?13. What is a homogeneous Mixture14. Give 1 example of a Homogeneous
Mixture.15. Give 1 example of a
Heterogeneous Mixture.16. What is the Law of Conservation of
Mass?17. What is 9x8?18. What is 7x11?19. What is 6x12?20. What is 12 x 12?21. What is the square root of 81?22. What is the square root of 169?23. Spell Chemistry.
CHANGE SEATS!
Law of Conservation of Mass
Law of Conservation of Mass states: In a chemical reaction matter can neither be created
nor destroyed!In other words…The mass before a chemical reaction equals the mass after the
reaction
Again…Mass (g) before a reaction = Mass (g) after the
reaction
Demo!
Where did the Matter go?
Video! Magic!
Separation of a Mixture!
Activity: On your table, you have 1 mixture and a few
supplies…find a way to separate the mixture! (15
min) Write down your procedure as you go!
Filtration • Filtration is a technique that uses a porous barrier to separate a solid from a liquid. This type of separation involves a mixture poured through a piece of filter paper that has been folded in to a cone shape. The liquid passes through and the solid stays behind.
DistillationDistillation: a method of separating mixtures based on boiling point
Decantation
Decantation: a method of separating a solid and a liquid by pouring the liquid off the top of the solid
Chromatography
Chromatography is a technique that separates a mixture (called the mobile phase) on the basis of size and the time to travel across the surface of another material (called the stationary phase).
Activity: Now it’s time to try Chromatography! (5 min)
Properties of Matter
Physical Property: A Characteristic that does NOT change the composition of a
substance (you can get it back!)
Physical Property Examples:Density
Color
Boiling Point
Melting Point
Chemical Property: A Characteristic that CHANGES the composition of a substance (you
can NOT get it back!)
Physical Property Examples:Flammability
Toxicity
Heat it takes to combust
Physical CHANGE: A Characteristic that does NOT change the composition of a
substance (you can get it back!)
Chemical CHANGE: A Characteristic that CHANGES the composition of a substance (you
can NOT get it back!)