Download - Physical vs Chemical Properties of Matter
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Physical vs Chemical Properties of Matter
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Extensive Properties of Matter
– Extensive - Properties that do depend on the amount of matter present. • Mass - A measurement of the amount of matter in a
object (grams). • Weight - A measurement of the gravitational force of
attraction of the earth acting on an object. • Volume - A measurement of the amount of space a
substance occupies. • Length
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Intensive Properties– Intensive - Properties that do not depend on the amount of the matter
present. • Color • Odor • Luster - How shiny a substance is. • Malleability - The ability of a substance to be beaten into thin sheets. • Ductility - The ability of a substance to be drawn into thin wires. • Conductivity - The ability of a substance to allow the flow of energy or
electricity. • Hardness - How easily a substance can be scratched. • Melting/Freezing Point - The temperature at which the solid and liquid
phases of a substance are in equilibrium at atmospheric pressure. • Boiling Point - The temperature at which the vapor pressure of a liquid is
equal to the pressure on the liquid (generally atmospheric pressure). • Density - The mass of a substance divided by its volume
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LusterHow shiny a substance is
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Hardness• Moh’s hardness scale is
used to measure hardness by how easy it is to scratch a substance.
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Phase Change• Is it a gas, a solid or a liquid
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•Density
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Chemical Properties of Matter
• Chemical Properties of matter deal with how the substances reacts with other substances
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Oxidation• Does the substance rust or combine with
oxygen
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Ph of the substanceIs the measure of the H+ ions in a solution
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Heat of Combustion
• The temperature at which something will burn
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Physical Change vs Chemical Change• There are two possible definitions for Physical and Chemical
changes:
1. A physical change is reversible, a chemical change is not. – For example, the freezing of water would be a physical change because it
can be reversed– the burning of wood is a chemical change - you can't 'unburn' it.2. A physical change is a change in which no new substance is formed; a
chemical change results in the formation of one or more new substances. -Again, consider the previous examples: -Freezing water into ice just results in water molecules which are 'stuck' together - it's still H2O. -Burning wood results in ash, carbon dioxide, etc, all new substances which weren't there when you started.
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Mixtures-In Mixtures Substance maintain their chemical properties.-Substances can be seperated
-Mixtures are substances held together by physical forces, not chemical. That statement means the individual molecules enjoy being near each other, but their fundamental chemical structure does not change when they enter the mixture.
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Solutions• Solutions are groups of molecules that are mixed
up In a completely even distribution. • example: Sugar in water vs. Sand in water. Sugar dissolves
and is spread throughout the glass of water. The sand sinks to the bottom. The sugar-water could be considered a
solution. The sand-water is a mixture -A simple solution is basically two substances that are going to be
combined. -A solute is the substance to be dissolved (sugar)solvent. -A Solvent is the one doing the dissolving (water). As a
The rule of thumb, there is usually more solvent than solut then one solvent
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Homozygous vs Heterozygous
• A homogeneous mixture has the same uniform appearance and composition throughout. • A heterogeneous mixture consists of visibly
different substances or phases. The three phases or states of matter are
gas, liquid, and solid.
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Different types
• Alloys- Metal Mixtures• Colloids- larger particles in a hoogeneous
suspension• Suspension- Large particles floating in a
solution lifted by flow or motion