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Ch 4 Phys Science
Introduction to Physical Science
| Term | Definition |
|---|---|
| matter | all substances that take up space |
| solid | a substance with a definite shape and definite volume |
| liquid | a substance with a definite volume, but no definite shape |
| gas | a substance with no definite shape or volume |
| quantification | systematic process of accurately measuring and counting |
| boiling point | the temperature in which a liquid becomes a gas |
| weight | the measure of the gravitational force on an object |
| density | mass divided by volume |
| element | the simplest type of substance |
| atoms | the smallest particle of an element |
| compound | a substance formed from the chemical union of two or more elements |
| molecule | formed when two or more atoms chemically unite |
| nucleus | the core of an atom |
| electrons | negatively charged particles in an atom |
| protons | positively charged particles in an atom |
| neutrons | neutral (no charge) particles in an atom |
| atomoic mass | the sum of the number of protons and neutrons in the nucleus of an atom |
| ion | an electrically charged atom that results from gaining or losing electrons |
| ionic bond | a chemical bond that involved the transfer of electrons from one atom to another |
| energy | the ability to do work |
| force | a push or pull |
| kinetic energy | the energy of motion |
| potential energy | the energy of position |
| radiant energy | electromagnetic waves |
| The First Law of Thermodynamics | The total amount of matter and energy in the universe is constant |
| solubility | the ability to be dissolved |
| mass | the amount of matter in an object |
| atomic number | the number of protons an atom contains |