physical science: study guide. states of matter the three forms that matter usually takes: solid,...
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Molecule A single particle of matter made up of two or more atoms joined together.TRANSCRIPT
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Physical Science:Study Guide
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states of matter
The three forms that matter usually takes: solid, liquid, and gas.
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Molecule
A single particle of matter made up of two or more atoms joined together.
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physical change
• A change in the size, shape, or state of matter that does not change it into a new kind of matter.
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Conductors
Material that an electrical charge can move through easily
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electric circuit
• A continuous flow of electric charges.
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Electromagnet
A strong temporary magnet that uses electricity to produce magnetism.
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Insulators
Materials that electric charges do not move through easily.
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Magnet
An object that attracts certain materials, mainly iron.
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Mass
The amount of matter in an object.
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Atom
The smallest particle of matter.
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Matter
Anything that has mass and take up space.
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chemical change
A change in matter that produces new kinds of matter.
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static electricity
An electric charge that builds up on a material like a balloon.
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series circuit
• A circuit with one single pathway
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magnet poles
The two areas on a magnet with the greatest magnetic force.
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parallel circuit
• A circuit that has more than one pathway
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Chemical ChangeAn example is paper being turned
into ash.
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puddle of water Changing form a liquid to a gas is a
change in state. Changes of state are physical changes, so an evaporating puddle does not form a new kind of matter.
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moleculesin a gas do not stay close together
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chemical change
• Rust on a metal cookie sheet• Wood burnign in a campfire• An Alka-Seltzer tablet bubbling in a
cup of water• Making blueberry muffins• Paper burning
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physical change• Folding a paper into the shape of a bird• Paper being cut into the shape of a
snowflake• Water evaporating from a puddle• A melting popsicle• Breaking a window• Liquid water becoming ice
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Heat & EnergyWhen a cup of warm water is put in the refrigerator energy is taken away from the water.
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Heat & EnergyWhen the sun shines on a parking lot, energy is added to the parking lot.
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Heat & EnergyWhen solid iron is melted, energy is added to the iron.
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static electricity
•A built-up of an electric charge
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Types of Matter• Positive
• Negative
• Neutral
— + + —— — ++ + + —
— — + + + —— — +
— + —— + +— + + —
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Matter
• Attracts• Two samples of matter that have
different charges will attract
• Repel• Two samples of matter that have the
same charge will attract
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Compass• Needle always points North
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electromagnet vs. bar magnet? An electromagnets uses electricity and
can be turned on and off. To increase the strength of an electromagnet, you can wrap more wire around the iron core
A bar magnet has a North and South pole and can not be turned on or off.
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Circuits• Flipping a switch on closes a
circuit. • Flipping a switch off opens a
circuit.
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CircuitsCircuit A is a series circuit.
Circuit B is a parallel circuit.
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three parts of every working circuit • Power source (battery)• Conductor (wire)• Something that uses the electricity
(light bulb)
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three parts of an electromagnet • Power source (battery)• Conductor (wire)• An iron core wrapped with a
conductor (bolt wrapped wire)
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Magnets
N
S
S
S
S
N
N
N
Magnets that attract
Magnets that repel.
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Conductors• Metal Spoon• Water• Metals
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Insulators• plastic • sweater• balloon