Matter and Change
3 states of matter
Element
definition
simplest form of matter the has a unique property
examples
hydrogen
iron
silver
gold
Compound
definition
substance with two or more elements.
examples
H20 = water
sugar = C6H12O6
Law of conservation law
IMPORTANT LAW OF NATURE!!!
law says:
Mass cannot be created or destroyed. it will change form.
Chemical reactions
chemical property
definition
ability to undergo a specific chemical change.
chemical change
definition
one or more substances that change into one or more substances.
end of reaction
start of reaction
reactants
products
recognizing a chemical change.
formation of precipitation
little pieces of material in liquid that was not there before.
transfer of energy
heat
light
change in color
production of gas
bubbles
new smell
Describing matter
intensive properties
definition
examples:
hardness
destiny
depends on the type of matter and what it is made up of.
extensive properties
definition
Substance
examples
volume
mass
depends on the amount of matter.
physical properties
definition
has a uniform and definite composition
size / or amount can change, but the composition always stays the same.
solid
liquid
gas
examples:
examples:
examples:
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definite volume ( cannot be compressed ).
particles: that vibrate against each other, cannot move out of place.
definite shape ( will not take the shape of its container ).
No definite shape ( will take the shape of it's container ).
Particles: that can move out of place and around others. (flow / pour).
definite volume ( cannot be compressed ).
Mixtures
separating them
mechanical
filtration
distillation
2 types
Homogeneous
definition: physical blend with two or more components.
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