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science final exam 1

Physical Science Final Exam Review Szerdy part 1

TermDefinition
Electromagnetic Spectrum different frequencies of light energy, including Radio Waves, Microwaves, Infrared, visible light, Ultraviolet light, x-ray, and Gamma Rays.
Physical Properties properties that can be observed WITHOUT CHANGING the substance. Examples : electrical conductivity, thermal conductivity, solubility, magnetic properties, melting point, boiling point, density.
Chemical Properties Properties that involve CHANGE the substance into something else. Examples: the ability to rust, the ability to burn, the ability to tarnish.
Density Mass/Volume
Mass the amount of matter in an object (Does not change in space!)
Weight the pull of gravity on an object (Changes on other planets and in space!)
Volume The amount of space an object fills.
Physical Change Changes appearance of an object, but it is still the same substance. (Example: tearing paper, breaking glass, cutting hair, melting ice, boiling water)
Chemical Change Changes what a substance IS. (Examples: Burning wood to ash, metal turning to rust.)
Law of Conservation of Matter Matter can NOT be created or destroyed...but it CAN change forms.
Atom the smallest unit of an element.
Proton Positive Charge, in the nucleus of an atom.
Neutron Neutral Charge, in the nucleus of an atom.
Electron Negative Charge, in the electron cloud of an atom.
Element only one type of atom. Each Square on the periodic table. (Hydrogen, Nitrogen)
Molecule More than one atom joined together (Example: C6H12O6 - sugar)
Created by: Hinson Science