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What are physical properties?
can be observed without chemically changing matter
What are chemical properties?
describe how a substance interacts with other substances
What type of property is malleability?
psychical
What type of property is density?
physical
What type of property is color?
physical
What type of property is shape?
physical
What type of property texture?
physical
What type of property is mass?
physical
What type of property is ductility?
physical
What type of property is conductivity?
physical
What type of property is solubility?
physical
What type of property is re activity?
chemical
What type of property is combustability?
chemical
What type of property is flammability?
chemical
What type of property is acidity?
chemical
What type of property is the ability to rust?
chemical
What is a physical change?
no change in identity of substance
What is a chemical change?
one or more new substances is created
What is the density of water?
1.0
What is the freezing point of water?
0 degrees celcius
What is the boiling point of water?
100 Celsius
When does liquid turn to solid?
freezing point
When does solid turn to liquid?
melting point
What two points are the same?
melting and freezing
When does liquid turn to gas?
boiling point
When does gas turn to liquid?
Condensation point
When does solid turn to gas?
sublimation point
What type of change is acid rain?
chemical
What is the law of conservation of mass?
mass cant be created or destroyed
What is an Element?
pure substance made of one kind of atom
What is and element represented by?
one or two letter symbol
What is a compound?
two or more elements chemically combined
What are compounds represented by?
chemical formula
What proportions do compounds combine in?
the same proportions
What is a mixture?
two or more substances physically combined
What proportions do mixtures combine in?
not the same proportions
What is a heterogeneous mixture?
not uniform
What are homogeneous mixtures
uniform
What is an alloy?
solution of two or more metals
What is hydrogen peroxide?
coumpound
What is carbon dioxide?
compound
What is rust?
compound
What is carbon?
element
What is steel?
solution
What is lead?
element
How can the components of a mixture be separated with physical properties?
magnetism
density
What is centrifuge?
an instrument that uses density to separate mixtures when tiny solid particles are dissolved in water
What is used to separate liquids and solids?
filtration
What is used to separate solutions
evaporation
distillation
An object will float in water if?
its density is less than 1.0
An object will sink in water if?
its density is greater than 1.0
What is the formula for density?
mass divided by volume
What are intensive physical properties?
remain the same no matter how of of the substance you have
ex density
What are extensive physical properties?
depend on the amount of substance present
ex- mass, volume, length
What is suspension?
heterogeneous mixtures
particles will settle out over time
particles are large
can be separated by fileration
What are colloids?
homogeneous mixtures
medium sized particles
What is the Tyndall effect?
scattering of light by a colloid
What are examples of suspensions?
glue
dirt water
What are examples of colloids?
milk
blood
smoke
clouds
mayonnaise
marshmellows
What are Solutions?
constant composition that is uniform throughout
small particles
can be solid (alloy), liquid, or gas
What is a solute?
gets dissolved
What is solvent?
does the dissolving
What is filtration?
technique that uses a porous barrier to separate a solid from a liquid
What is distillation?
separation based on differences in the boiling points of substances involved
What is crystallization?
separation resulting in the formation of pure solid particles of a substance from a solution
What is Chromatography?
separates the components of a mixture on the tendency of each to travel or be drawn across the surface of another material
Author
jfindley
ID
260239
Card Set
Chemistry test
Description
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Updated
2/4/2014, 11:07:53 PM
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