2 Notes SPI 0807.9.3 to 9.4 Elements, Compounds, Mixtures What Is An Element? a substance that CANNOT be broken down into a simpler substance by CHEMICAL means. In other words…you CANNOT change one element into a different element with a chemical reaction Each individual element is a unique particle called an atom So in other words…elements are the different types of atoms Example : Lithium Example: Lithium is an element. Here is one lithium atom 3 L i Lithiu m 6.9
Transcript
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Notes SPI 0807.9.3 to 9.4 Elements, Compounds, Mixtures
What Is An Element? a substance that CANNOT be broken down into a simpler substance by CHEMICAL means. In other words…you CANNOT change one element into a different element with a chemical reactionEach individual element is a unique particle called an atom So in other words…elements are the different types of atoms
Example:Lithium
Example:Lithium is an element.Here is one lithium atom
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LiLithium
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We use a chart to organize elements called…
Currently scientists believe there are only 98 naturally occurring elements in the universe (Reference link: Chemistry WebsiteWe have also created 20 man-made elements for a total of 118
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Notes Elements Continued
The Periodic Table
118Uuo
Ununoctium
Elements Continued: Elements’ names always start with a capital letterCan be followed by one or more lower case letters
Examples: H = the element hydrogenrepresents one hydrogen atomNa = the element sodiumrepresents one sodium atomUub=the element ununbiumrepresents one ununbium atom
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Notes SPI 0807.9.3 to 9.4 Elements, Compounds, Mixtures
What Is A Compound? …is a substance made up of atoms of two or more different
ELEMENTS that are CHEMICALLY combined via a chemical reaction.
EXAMPLES:
NaCl = (Table Salt)
CO2 = (Carbon dioxide)
C6H12O6 = (Glucose)
SODIUM AND CHLORINE
CARBON AND OXYGEN
Notes SPI 0807.9.3 to 9.4 Elements, Compounds, Mixtures
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CARBON, HYDROGEN, & OXYGEN
Notice the elements that were chemically bonded together to form these compounds:
Is this an element or a compound?Write a capital E if you think it is an elementWrite a capital C if you think it is a compound
Cs(Cesium)
Why?...is a pure substance, consists of only one type of atom
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Review Activity
Element
Is this an element or a compound?Write a capital E if you think it is an elementWrite a capital C if you think it is a compound
NaCl(Sodium Chloride)
Why?...has two atoms chemically bonded together
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Review Activity
Compound
Is this an element or a compound?Write a capital E if you think it is an elementWrite a capital C if you think it is a compound
Fe(Iron)
Why?...is a pure substance, consists of only one type of atom
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Review Activity
Element
Is this an element or a compound?Write a capital E if you think it is an elementWrite a capital C if you think it is a compound
MgCl2
(Magnesium Chloride)Why?...has two atoms chemically bonded together
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Review Activity
Compound
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 SPI 0807.9.3 to 9.4 Elements, Compounds, Mixtures
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No precipitate is formed
No smoke No fizzing or foaming No explosion
No heat or light given off
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
Mg (Magnesium)
Why?...is a pure substance, consists of only one type of atom 11
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
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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
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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
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 15
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
