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Final's Reveiw
Science
| Term | Definition |
|---|---|
| Circuit | A closed path that electric current follows. |
| Electric Current | The net movement of electric charges in a single direction. |
| Conductor | A material in which electrons are able to move easily. |
| Insulator | a material in which electrons are not able to move easily. |
| Law of Conservation of charge | Charge can be transferred from object to object, but it cannot be created or destroyed. |
| Chemical Change | A change of one substance to another. |
| Chemical property | Is a characteristic of a substance that indicates whether it can undergo a certain chemical change. |
| Physical Property | Any characteristic of a material that you can observe without changing the identity of the substance that make up the material. |
| Physical change | A change in size, shape, or state of matter. |
| Law of conservation of mass | The mass of all substances that are present before a chemical change equals the mass of all the substances that remain after the change. |
| Kinetic theory | Is an explanation of how particles of matter behave. |
| Thermal expansion | Is an increase in size of a substance when the temperature is increased. |
| viscosity | The resistance to flow by a fluid. |
| buyancy | the ability of a fluid, a liquid, or a gas to exert an upward force on an object immersed in it. |
| Proton | Particles that are positive. |
| Neutron | Particles that are Nuetral |
| Electron | Particles that are negative. |
| Atomic Number | The number of protons in an atom is equal to a number called the atomic number. |
| Mass Number | the sum of Protons and Neutrons. |
| Ductile | Can be drawn into a wire. |
| Malleable | able to be hammered or rolled into sheets. |
| Metal | good conductors of heat, and electricity. |
| Nonmetals | elements that are usually gases or brittle solids at room temperature. |
| Metalloids | Can form ionic or covalent bonds with other elements and can have metallic and nonmetallic properties. |