click below
click below
Normal Size Small Size show me how
5th - Chapter 9 A
Chapter 9 vocabulary using book definitions
| Term | Definition |
|---|---|
| mass | the amount of matter in an object |
| weight | how strongly gravity pulls on an object |
| volume | how much space matter takes up |
| matter | anything that has mass and volume |
| density | the amount of mass for each cubic centimeter of a substance |
| buoyancy | resistance to sinking |
| element | a material that cannot be broken into anything simpler by chemical reactions |
| metal | elements that share the common properties of luster, conductivity, and flexibility |
| atom | the smallest unit of an element that still retains the properties of that element |
| nucleus | the center of an atom |
| proton | a particle with one unit of positive charge each |
| neutron | a particle with no electric charge - it is neutral |
| electron | smaller particles with one unit of negative charge each |
| molecule | particles with more than one atom joined together |
| malleability | the ability to be bent, flattened, or hammered without breaking |
| ductility | the ability to be pulled into thin wires without breaking |
| corrosion | when metals combine with nonmetals from the environment |
| semiconductor | a material that conducts electricity better than a nonmetal, but not as well as a metal |