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Maryhopes chem flash cards ch1
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31
Chemistry
10th Grade
02/25/2013

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Term
Law of conservation
Definition
The total mass remains the same during a chemical change
Term
Example of law of conservation
Definition
Mercury and oxygen creates mercury oxide
Term
Differences in states of matter
Definition
How tightly the particles are packed together
Example:
Molecules in a liquid are very loosely packed together and a solid particles are very tightly packed
Term
Example of liquid
Definition
Water
Term
Example of solid
Definition
Ice
Term
Example of gas
Definition
Water vapor
Term
Physical property
Definition
A characteristic that can be observed for a material without changing its chemIcal identity
Term
Examples of physical property
Definition
Color
Density
Term
Chemical property
Definition
A characteristic of a material involving its chemical change
Term
Examples of chemical property
Definition
Heat combustion
Reactivity
PH factor
Term
Physical change
Definition
A change in the form of matter but not in its chemical identity
Term
Examples of a physical change
Definition
Melting an ice cube
Crumbling a paper
Breaking a bottle
Term
Chemical change
Definition
A change in which one or ore kinds of matter are transformed into new matter or several kinds of new matter
Term
Examples of a chemical change
Definition
Burning something
Rusting of iron
Term
Elements
Definition
A substance that cannot be decomposed by any chemical reaction into simpler substances
Term
Examples of elements
Definition
Gold
Iron
Silver
Term
Compound
Definition
A substance so posed of two or more elements chemically combined
Term
Examples of compounds
Definition
Sodium chloride
Water (h2o)
Carbondale dioxide (co2)
Term
Mixtures
Definition
A material that can be separated by physical means into two or more substances
Term
Examples of mixtures
Definition
Salt water
Salad dressing
Term
Two types of mixtures
Definition
Homogenous and heterogeneous
Term
Heterogenous mixture
Definition
A mixture that consists of physically distinct parts each with differ properties
Term
Homogenous mixture
Definition
A mixture that is uniform in its properties throughout given samples
Term
Intensive property
Definition
Properties that do not depend on the amount of substance that's present
Term
Examples of intensive properties
Definition
Boiling point
Density
State of matter
Term
Extensive property
Definition
Properties that DO depend on the amount of substance present
Term
Examples of extensive properties
Definition
Volume
Mass
Size
Term
Chromatography
Definition
A group of similar separation techniques
Term
Types of chromatography
Definition
Paper
Column
Gas
Term
Pure substance
Definition
A sample of matter with both definte and constant combustion with distinct chemical properties
Term
Impure substance
Definition
A sample of matter without definite and constant combustion with distinct chemical properties
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