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Chemistry 2 Test Physical Science
AK TMHS Wells 3 & 4
15
Chemistry
9th Grade
04/29/2017

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Term
Acid
Definition
Any chemical that donates a hydrogen ion to another substance.
Term
Base
Definition
Any chemical that accepts a hydrogen ion into its own structure.
Term
Hydronium Ion
Definition
A water molecule with an extra proton.
Term
Hydroxide Ion
Definition
A water molecule without the nucleus of one of the hydrogen atoms.
Term
pH
Definition
-log[H3O+]
Term
Neutralization
Definition
The reaction between an acid and a base
Term
Alpha Particle
Definition
A combination of two protons and two neutrons: a helium atom, atomic number 2
Term
Beta Particle
Definition
An electron that is ejected by an atomic nucleus
Term
Gamma Radiation
Definition
An extremely energetic form of electromagnetic radiation
Term
Carbon-14 Dating
Definition
Found in decaying animals and fossils, etc, allowing measuring of its half-life to make a good estimate of how old something is.
Term
Fission
Definition
The splitting of a nucleus into fragments
Term
Electromagnetic Spectrum
Definition
The classification of electromagnetic waves according to frequency
Term
Electromagnetic Wave
Definition
The vibrating electric and magnetic fields that regenerate each other
Term
Frequency
Definition
How often a vibration occurs
Term
Wavelength
Definition
The distance from one crest to the next one
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