8 th grade sciencersm go to work station 1 or 2 and get the following items one small dry-erase...
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8th Grade Science RSM
Go to work station 1 or 2 and get the following items One small dry-erase board One dry-erase marker A paper towel Wait for further instructions
To do:A) Celebrate birthdaysB) Remind about reward "parties"
Feb 7, 2013
What is a Mixture? When you combine two or more substances together, if no
chemical reaction occurs then it is called a mixture NOTE: A mixture may contain 1 or more compounds, as long
as they do not react with each other (like Koolaid…see example below)MIXTURE EXAMPLES:Koolaid…
Pizza…
When you combine cheese, tomato sauce, and dough, these items do not chemically react with each other.
Notes
When you combine water (a compound) and Koolaid powder (sugar, flavoring, & coloring) these items do not chemically react with each other.
SPI 0807.9.4 Mixtures or Compounds
PRESS THE RIGHT-ARROW BUTTON ON YOUR KEYBOARD TO ADVANCE
THROUGH THE PRESENTATION
More About Mixtures: Any changes you observe in a mixture are only physical changes…no new substances are formed.Mixtures can be fairly easily separated back into the individual ingredients
More Mixture Examples: Red Bull …is merely a combination of water and other ingredients
Air…is merely a combination of nitrogen, oxygen, & other gases
Steel…is merely a combination of iron and carbon
Notes SPI 0807.9.4 Mixtures or Compounds
No chemical reaction occurs
No chemical reaction occurs
No chemical reaction occurs
What Is A mixture? a combination of two or more substances that ARE NOT chemically combined No chemical reaction occurs!
Unlike a compound… …a mixture can be fairly easily taken back apart EXAMPLES: Soup, Soft drinks (Coke, Pepsi, etc.), Tea, Hamburgers,
Koolaid Drinks, pizza, etc
Notes
No precipitate is formed
No smoke No fizzing or foaming No explosion
No heat or light given off
SPI 0807.9.4 Mixtures or Compounds
Key Point About Mixtures Mixtures can be fairly easily taken back apart No chemical reaction occurs!
More Mixture Examples: Soup, Soft drinks (Coke, Pepsi, etc.), Tea, Salads, Soil
(dirt), Perfume, Cologne, Bronze, etc
Notes
No precipitate is formed
No smoke
No fizzing or foaming No explosion
No heat or light given off
SPI 0807.9.4 Mixtures or Compounds
What Is a Compound? …is made up of atoms of two or more different elements
that are chemically bonded via a chemical reaction.
More Compound Examples:Water (Hydrogen Oxide)Battery Acid (Hydrogen Sulfate)Table Salt (Sodium Chloride) Table Sugar (Sucrose)Rust (Iron Oxide)Chalk (Calcium Carbonate)
Notes SPI 0807.9.4 Mixtures or Compounds
Review Activity
Is this an element, compound, or mixture?Write a capital E if you think it is an elementWrite a capital C if you think it is a compoundWrite a capital M if you think it is a mixture
Ar (Argon)
Why?...is a pure substance, consists of only one type of atom
Element
Is this an element, compound, or mixture?Write a capital E if you think it is an elementWrite a capital C if you think it is a compoundWrite a capital M if you think it is a mixture
Monster Energy Drink
Why…ingredients DO NOT chemically combine Ingredients: Water, sugar, coloring, and flavor
Review Activity
Mixture
Is this an element, compound, or mixture?Write a capital E if you think it is an elementWrite a capital C if you think it is a compoundWrite a capital M if you think it is a mixture
C6H12O6
(Glucose)Why?...has 3 atoms chemically bonded together
Review Activity
Compound
Is this an element, compound, or mixture?Write a capital E if you think it is an elementWrite a capital C if you think it is a compoundWrite a capital M if you think it is a mixture
Chicken Soup
Why…ingredients DO NOT chemically combine
Ingredients: Water, chicken, vegetable, noodles, salt, etc.
Review Activity
Mixture
Is this an element, compound, or mixture?Write a capital E if you think it is an elementWrite a capital C if you think it is a compoundWrite a capital M if you think it is a mixture
CO2
(Carbon Dioxide)Why?...has 2 atoms chemically bonded together
Review Activity
Compound
Is this an element, compound, or mixture?Write a capital E if you think it is an elementWrite a capital C if you think it is a compoundWrite a capital M if you think it is a mixture
Uut
(Ununtrium)Why?...is a pure substance, consists of only one type of atom
Review Activity
Element