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Chem study guided notes: matter ch. 1
Quiz review
24
Chemistry
10th Grade
02/25/2013

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Term
Law of conservation
Definition
The total mass remains the same during a chemical reaction
Term
What's a chemical reaction portraying of the law of conservation?
Definition
Heating 5g of mercury oxide produces 1g of oxygen and 4g of mercury
Term
What is an everyday example of the law of conservation?
Definition
Burning 10g of wood produces 10g of ash/smoke/etc.
Term
Describe the differences betewwn the different states of matter
Definition
Solids, liquids, and gasses are all in different physical forms
Term
What is a physical property?
Definition
a property that describes the physical characteristics of an object
Term
Give 3 examples of a physical change
Definition

Boiling water

snapping a stick

freezing water

Term
Define a chemical change
Definition
A change that changes the molecular makeup of an object
Term
Give 2 examples of a chemical change
Definition

Burning wood 

electrolysis

Term
What is a physical change?
Definition
A change in which the object is changed but the molecular formula stays the same
Term
What is a chemical property?
Definition
A property that explains how something reacts with something else. Ex: a chemical property of vinegar is that it reacts with baking soda
Term
What is a pure substance?
Definition
An object made out of only one element or molecule
Term
What is an impure substance?
Definition
A material that is made up of multiple elements or types of molecules
Term
What is an element?
Definition
A type of atom. The farthest a substance can be broken down
Term
Give an example of an element
Definition

Calcium

hydrogen

oxygen

gold

Term
What is a compound?
Definition
Two or more elements combined in a set ratio
Term
What are some examples of a compound?
Definition

Water

glucose

alchohol 

Term
What is a mixture?
Definition
multiplegroin ultisols substances mixed into eachother
Term
What is a homogeneous mixture?
Definition
A mixture in which thpo different pieces cannot be distinguished by the naked eye
Term
What is a heterogeneous mixture?
Definition
A mixture in which the different substances can bdesist unguided by the naked eye
Term
What is chromatography?
Definition
A method used to separate two or more substances from eachother. Ex: colors/ dyes
Term
What is an intensive property?
Definition
A property that is not effected by the amount of a substance present in a sample. Ex: density
Term
What is an extensive property?
Definition
A property that varies with the amount of a substance in a sample. Ex: mass and volume
Term
What is gas chromatography?
Definition
This is used to separate traces of  different substanceh mixed when in gas form
Term
What are the 3 different typed of chromatography?
Definition
Gas, which is used to seperate gas- gas, and gas- solid samples. Liquid, which is used for gas- liquid and gas- solid samples and lastly, supercritical fluid which is used for small substances.
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