| A | B |
|---|
| matter | anything that has mass and takes up space; a physical |
| pure substance | A material made of only one kind of element or compound; not a mixture |
| mixture | A physical combination of two or more substances. |
| State of matter | The physical form of matter described by its physical characteristics |
| Temperature | The hotness or coldness of a substance stated in the degrees. |
| Solid | A rigid state of matter in which the particles align in a fixed arrangement. |
| Liquid | A fluid state of matter in which the particles free to move but are held close together |
| Gas | A fluid state of matter in which the particles move so fast and are so far apart as to have little interaction with each other |
| Plasma | A fluid state of matter made extremely high temperature ionized particles. |
| Melting | The change of state from solid to liquid at melting point that is caused by adding energy |
| Freezing | The change in the state from liquid to a solid is caused by removing energy. |
| Vaporization | The change in the state from liquid to a gas caused by adding energy |
| Boiling | The change of state from liquid to a gas at the boiling point |
| Evaporation | The change of state from a liquid to a gas below the boiling point but above the freezing point |
| Condensation | The change in state from gas to a liquid caused by removing energy. |
| Sublimation | The change in state from a solid directly to a gas caused by adding energy |
| Deposition | The change in state form a gas directly to a solid caused by removing energy |
| Mass | The measure of the amount of matter in an object |
| Weight | The force of gravitational attraction between an object’s mass and it’s resident planet |
| Volume | The amount of space that an object occupies |
| Force | A push or a pull on an objects |
| Gravity | The attractive force between any two objects based on their masses |
| Work | a task or tasks to be undertaken |
| Energy | The ability to do work |
| First law of Thermodynamics | Scientific law that states that matter and energy cannot be created or destroyed but can be transferred between objects or transform to a different form |
| Atom | The smallest neutral particles of an element that retains the characteristics of that element |
| Ion | A charged atom or ground of atoms caused by a charge imbalance. |
| Element | A pure substance made of only one kind of atom |
| Compound | A pure substance formed by chemically combining two or more elements |
| Molecule | Two or more chemically bonded atoms |
| Physical change | A change in matter that doesn’t alter its chemical identity |
| Chemical change | The change from one pure substance to another by the rearrangement of atoms in the chemical reaction |
| Nuclear change | A change of one element into another element change occurring in the nucleus of the atom |
