Unit B Matter and Chemical Change. Changes of states Properties of matter Classification of...
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Transcript of Unit B Matter and Chemical Change. Changes of states Properties of matter Classification of...
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Organization of Matter
Unit B Matter and Chemical Change
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Changes of states Properties of matter Classification of matter
Overview
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Melting: A solid changing to a liquid Evaporation: A liquid changing to a gas Freezing: A liquid changing to solid Condensation: A gas changing to a liquid Deposition: a gas changing directly to a
solid. Sublimation: a solid changing directly to a
gas.
Changes in states of matter
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Changes of states Properties of matter Classification of matter
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What is Matter?
Matter is anything that has mass and occupies space.
What are the three states of matter?
Solid Liquid and Gas
Matter
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How can we tell when substances differ from one another?
Properties: are the characteristics that can
be used to describe a substance. Two types: Physical and Chemical
Properties
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Physical Properties: property that describes the physical appearance and composition of a substance.
Physical Change: The physical composition stays the same the state or appearance is the only thing that is altered.
Physical Properties
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Colour LustreEx Dimond high in lustre and Emerald is low
in lustre
Melting point Boiling point Hardness (pg 99 figure 1.7 Mohs hardness
scale).
List of Physical Properties
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MalleabilityEx. Gold DuctilityEx. Copper wire Crystal shape Solubility Density Conductivity
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Chemical Properties – describes how a substance behaves when it interacts with another.
Reaction with acid Ability to burn Reaction with water Behavior in air Reaction to heat
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Changes of states Properties of matter Classification of matter
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Can be either an element or a compound.
Element: cannot be broken down to any simpler substances.
Compound: two or elements combining in a chemical reaction.
Pure Substance
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Is a combination of pure substances. In a mixture both substances remain in their
pure form, although they are not always easily identified.
4 types of mixtures Mechanical Mixture Solution Suspension Colloid
Mixture
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