| A | B |
|---|
| constant | unchanging in nature, continuously happening |
| boiling point | The temperature at which a substance changes state from liquid to gas |
| melting point | The temperature at which a substance changes state from a solid to a liquid |
| freezing point | The temperature at which a substance changes state from a liquid to a solid |
| Condensation | The changing of a gas to a liquid |
| Evaporation | The changing of a liquid into a gas |
| Insulate | To prevent heat from passing through |
| Solid | The state of matter that has its own shape; will turn into a liquid when enough energy is added |
| Liquid | The state of matter that takes the shape of its container; will turn into a gas when enough energy is added |
| Density | The amount of mass in a given space |
| Buoyancy | How much upward force a liquid places on an item |
| Float | To be supported by a liquid |
| Sink | Cannot be supported by a liquid |
| Matter | Anything that has mass and takes up space. |
| Mass | The measure of the amount of matter in an object. |
| Properties | Characteristics of a substance that can be observed, measured, or changed |
| Magnetism | The forces of attraction or repulsion some materials have on other materials, especially iron |
| Physical State | A property of matter classified either as a solid, liquid, or gas |
| Solubility | A measure of an objects ability to dissolve in water |
| Conductor | A material that allows energy to pass through very easily |
| Insulator | A material that blocks the flow of energy |
| Mixture | A combination of two or more substances that do not form a new substance, but maintain the properties of the original substances |
| Solution | A mixture of two or more substances blended so completely that the mixture is the same everywhere and cannot be seperated by filtration |
| Ingredient | A component or substance in a mixture |
| Physical Change | A change of matter in size, state, or state without changing it into a new substance |
| Dissolving | The process of forming a solution with another substance |
| Energy | The ability to do work or cause change |
| Light Energy | A form of energy that travels through space and can be seen by the human eye; can also be collected and used as solar energy |
| Heat Energy | A form of energy that is closely related to temperature and can be felt as warmth |
| Electric Energy | A form of energy made availabe by a flow of electric charges through a conductor |
| Mechanical Energy | Energy of a machine or moving object |
| Sound Energy | Energy that we can hear produced by air vibrations |
| Change | To go from one state or condition to another; to make different |
| Electric Circuit | A complete (closed) pathway of conductors that allows electricy to flow through it |
| Electromagnetism | Magnetism produced by an electrical charge |
| Force | A push or a pull applied to an object |
| Push | A force that causes motion away from its source |
| Pull | Force that causes motion towards its source |
| Gravity | A natural force that attracts any to objects; the pull of the Earth or Moon on objects at or near its surface |
| Friction | A natural force that resists the motion of an object |
| Flow | To move or travel smoothly in a certain direction |
| Electric Current | The flow of electricity through a conductor |
| Light | Energy in the form of a wave that travels in straight lines, energy we can see |
| Heat | Energy created from fast moving molecules; also called thermal energy |
| Reflection | Light rays bouncing off the surface of an object |
| Refraction | The bending of light rays as they pass from one substance to another |
| Lens | A curved piece of clear plastic or glass that bends light rays |
| Mirror | A very smooth surface able to clearly reflect light to form a virtual image |
| Movement | When an object changes position |
| Shape | The outline or form of an object |
| Position | Where an object is located in space |
