Pure Substances and Mixtures
Mixtures
●
Can be separated into parts using different physical properties
●
Are made up of 2 or more types of matter
●
____________________ Mixtures: Sometimes you can see the particles of the different
substances (ex. Pizza, salad)
●
____________________ Mixtures: Mixtures that look like there is only one type of
particle because the different particles are so small, they blend together (ex. Tea, milk,
apple juice)
Pure Substances
●
Only 1 type of matter
●
Each pure substance is made up of its own type of _____________________
●
Cannot be separated into parts __________________
●
Ex. Sugar, pure water, oxygen, copper, gold
●
2 main types of pure substances
■
Element: _____________ be broken down using _________________
■
Compound: _________ be broken into smaller parts using chemical
reactions because these are made of _______________________ type
of element.
Different Types of Elements
●
Elements can be ____________________ or ______________________
●
We use the following properties to decide if elements are metals or non-metals:
Physical Property
Definition
How well the surface of a substance reflects light
Can be bent or hammered without breaking
Can be stretched into a wire without snapping
If heat or electric current moves through them easily
Liquid/ Solid/ Gas at room temperature
Comparing Metals and Non-Metals
Substance
State at Room
Temperature
Lustre
Conductivity
Malleability
Ductility
Metal
____________ at
room temperature
(except for Mercurywhich is a liquid)
Shiny (lustrous)
_____________
Conductors
Malleable
__________
Non-Metal
_________ or
__________at room
temperature (except
Bromine which is a
liquid)
___________(n
ot lustrous)
_____________
Conductors
_________
(not
malleable)
Not ductile
Metalloids
Have some properties of both ________________ and __________________
Summary:
Ex:
Ex:
Ex:
Ex:
Ex:
Classify each substance as an element, compound, or mixture:
Substance
Tap Water (H2O)
Distilled Water (H2O)
Gold
Chocolate Chip Cookie
Gatorade
Pizza
Aluminum
Table Salt (Sodium Chloride)
Copper
Toothpaste
Classification
Salsa
Iodine
Oxygen
Air
Sand and Water
Oil and Water
Soil
Silver
Salt and Water
Cereal and milk
Classify each element as a metal or nonmetal:
Element
Poor Conductors
Shiny
Malleable
Not Ductile
Brittle
Flexible
Dull
Lustrous
Soft, non-conductor, yellow
Hard, malleable, conducts heat
Classification
Hard, shiny, green, brittle
Soft, orange, flexible
Silvery, lustrous, ductile
Aluminum
Lead
Oxygen
Nickel
Classify each substance as an element, compound, or mixture:
Substance
Classification
Tap Water (H2O)
Mixture- homogenous
Distilled Water (H2O)
Compound
Gold
element
Chocolate Chip Cookie
mixture
Gatorade
mixture
Pizza
mixture
Aluminum
element
Table Salt (Sodium Chloride)
compound
Copper
element
Toothpaste
mixture
Salsa
mixture
Iodine
element
Oxygen
element
Air
mixture
Sand and Water
mixture
Oil and Water
mixture
Soil
mixture
Silver
element
Salt and Water
mixture
Cereal and milk
mixture
Classify each element as a metal or nonmetal:
Element
Classification
Poor Conductors
non-metal
Shiny
metal
Malleable
metal
Not Ductile
non-metal
Brittle
non-metal
Flexible
metal
Dull
non-metal
Lustrous
Metal
Soft, non-conductor, yellow
non-metal
Hard, malleable, conducts heat
metal
Hard, shiny, green, brittle
metalloid
Soft, orange, flexible
metalloid
Silvery, lustrous, ductile
metal
Aluminum
metal
Lead
metal
Oxygen
non-metal
Nickel
metal