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24 Cards in this Set
- Front
- Back
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Pressure |
The force exerted per unit area of a substance. Units of mass/area |
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Physical property |
A characteristic of a substance that can be observed or measured without changing the composition of the substance |
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Chemical property |
The way a substance reacts with others to form new substances with different properties |
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Density |
Mass divided by volume |
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Chemical change |
A change that occurs when a substance changes composition by forming one or more new substances |
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Physical change |
A change in physical form or properties of a substance that occurs without a change in composition |
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Law of conservation of mass |
A law that states that mass cannot be created or destroyed |
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Law of conservation of energy |
A law that states that energy cannot be created or destroyed |
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Energy |
The ability to change or move matter |
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Proton |
A positively charged subatomic particle in the nucleus of an atom |
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Neutron |
A subatomic particle that has no charge in the nucleus of an atom |
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Electron |
A negatively charged subatomic particle moving around outside the nucleus of an atom |
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Nucleus |
The center of an atom made up of protons and neutrons |
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Atomic number |
Number equal to number of protons in the nucleus |
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Atomic mass |
Protons + neutrons |
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Instantaneous velocity |
The limit of the average velocity as the time interval becomes infinitesimally smaller |
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Average velocity |
The distance divided by the time interval during which the distance occurred |
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Significant figure |
A reliably known digit |
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Second |
9.192631700x10^9 times the period of oscillation of radiation from the cesium atom |
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Meter |
The distance traveled by light in a vacuum during a time interval of 1/2.9792458x10^8 second |
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Kilogram |
Unit defined as the mass of a specific platinum-iridium alloy cylinder kept at the international bureau of weights and measures at Sevres, France |
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Dimensional analysis |
To treat dimensions as algebraic quantities |
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Dynamics |
The branch of physics concerned with the study of motion of an object and the relationship of this motion to such physical concepts as force and mass |
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Kinematics |
The branch if physics that describes motion without regard to the causes of that motion |
