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
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Example:
Example:
Lithium is an element.
Lithium
Here is one
lithium
atom
Lithium
Li
6.9
1
Notes

Elements Continued
We use a chart to organize elements called…
The Periodic Table
118
Uuo
Ununoctium
 Currently scientists believe there are only 98 naturally occurring
elements in the universe (Reference link: Chemistry Website
We have also created 20 man-made elements for a total of 118
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Notes
SPI 0807.9.3 to 9.4
Elements, Compounds, Mixtures

Elements Continued:
 Elements’ names always start with a capital letter
 Can be followed by one or more lower case letters
Examples:
H = the element hydrogen
 represents one hydrogen atom
Na = the element sodium
 represents one sodium atom
Uub=the element ununbium
 represents 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: Notice the elements that were
chemically bonded together to form these compounds:
NaCl = (Table Salt)
CO2 = (Carbon dioxide)
SODIUM AND CHLORINE
CARBON AND OXYGEN
C6H12O6 = (Glucose) CARBON, HYDROGEN, & OXYGEN
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Review Activity

Is this an element or a compound?
Write a capital E if you think it is an element
Write a capital C if you think it is a compound
Cs
Element
(Cesium)
Why?...is a pure substance, consists of only one type of atom
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Review Activity

Is this an element or a compound?
Write a capital E if you think it is an element
Write a capital C if you think it is a compound
NaCl
Compound
(Sodium Chloride)
Why?...has two atoms chemically bonded together
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Review Activity

Is this an element or a compound?
Write a capital E if you think it is an element
Write a capital C if you think it is a compound
Fe
Element
(Iron)
Why?...is a pure substance, consists of only one type of atom
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Review Activity

Is this an element or a compound?
Write a capital E if you think it is an element
Write a capital C if you think it is a compound
MgCl2
Compound
(Magnesium Chloride)
Why?...has two atoms chemically bonded together
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Notes
SPI 0807.9.3 to 9.4
Elements, Compounds, Mixtures

What Is A mixture?
 a combination of two or more substances that ARE NOT
chemically combined
 No chemical reaction occurs!
No explosion
No fizzing or foaming
No precipitate is formed
No smoke
No heat or light given off
 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
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Review Activity

Is this an element, compound, or mixture?
Write a capital E if you think it is an element
Write a capital C if you think it is a compound
Write a capital M if you think it is a mixture
Mg
Element
(Magnesium)
Why?...is a pure substance, consists of only one type of atom
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Review Activity

Is this an element, compound, or mixture?
Write a capital E if you think it is an element
Write a capital C if you think it is a compound
Write a capital M if you think it is a mixture
Monster Energy Drink
Mixture
Why…ingredients DO NOT chemically combine
Ingredients: Water, sugar, coloring, and flavor
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Review Activity

Is this an element, compound, or mixture?
Write a capital E if you think it is an element
Write a capital C if you think it is a compound
Write a capital M if you think it is a mixture
C6H12O6
Compound
(Glucose)
Why?...has 3 atoms chemically bonded together
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Review Activity

Is this an element, compound, or mixture?
Write a capital E if you think it is an element
Write a capital C if you think it is a compound
Write a capital M if you think it is a mixture
Chicken Soup
Mixture
Why…ingredients DO NOT chemically combine
Ingredients: Water, chicken, vegetable, noodles, salt, etc.
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Review Activity

Is this an element, compound, or mixture?
Write a capital E if you think it is an element
Write a capital C if you think it is a compound
Write a capital M if you think it is a mixture
CO2
Compound
(Carbon Dioxide)
Why?...has 2 atoms chemically bonded together
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Review Activity

Is this an element, compound, or mixture?
Write a capital E if you think it is an element
Write a capital C if you think it is a compound
Write a capital M if you think it is a mixture
Uut
Element
(Ununtrium)
Why?...is a pure substance, consists of only one type of atom
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