Chemistry Pt 1
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Last updated 4:24 PM on 1/1/23
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26 Terms
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Matter
Anything that has mass and takes up space
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States of Matter (list/describe)
Solid : tightest, fixed volume and shape
Liquid : tight, fixed volume, no fixed shape
Gas : loose, no fixed volume or shape
Liquid : tight, fixed volume, no fixed shape
Gas : loose, no fixed volume or shape
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Heterogeneous Mixture
Different to eye
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Homogeneous Mixture
Same throughout
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Compounds
Definite composition containing more than one element (Law of Composition); energy is needed to break bonds
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Mixtures
Have the properties of the substances that make them
A HOMOGENEOUS MIXTURE IS CALLED A SOLUTION
Ex: chocolate milk
A HOMOGENEOUS MIXTURE IS CALLED A SOLUTION
Ex: chocolate milk
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Physical Properties
Observed w/o changing into another substance
Ex: color, odor, density, melting point, hardness
Ex: color, odor, density, melting point, hardness
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Chemical Properties
Only observed when one substance turns into another
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Intensive Properties
Independent of amount; substance is the same; identifies a substance
Ex: water puddle has same properties as swimming pool (H2O)
Ex: water puddle has same properties as swimming pool (H2O)
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Extensive Properties
Dependent on the amount of substance
Ex: Mass/volume
Ex: Mass/volume
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Physical Change
Observed w/o changing into another substance
Ex: State, temperature, volume
Ex: State, temperature, volume
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Chemical Change
New substance made from another substance
Ex: Combustion, oxidation, decomposition
Ex: Combustion, oxidation, decomposition
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Filtration
Solides separate from liquids/solutions
Ex: Making gravy w/herbs
Ex: Making gravy w/herbs
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Distillation
Uses boiling points to separate a homogeneous mixture
Ex: mad scientist vibes
Ex: mad scientist vibes
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Chromatography
Separates substances on the basis of differences in the ability of substances to adhere to the solid surface
Ex: dyes to paper
Ex: dyes to paper
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Energy
The capacity to do work/transfer heat
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Work
The energy transferred when a force exerted on an object causes a displacement of that object
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Heat
Energy used to cause the temperature of an object to increase
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Force
Any push or pull on an object
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Kinetic Energy
Energy of motion (KE = 1/2mv^2)
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Potential Energy
Depends on its relative position compared to other objects
Ex: slide
Ex: slide
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Systems International d’ Unites (SI Units)
The international system of unit bases
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Conversion Prefix Acronym
King Henry Died Unexpectedly Drinking Chocolate Milk
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Mass
Measure of the amount of material in an object
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Length
Measure of distance
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Volume
Derived from length (m^3,etc.), measured w/graduated cylinders, pipettes, etc.