| A | B |
|---|
| mass | a measure of the amount of matter in an object |
| semiconductor | a material that has properties in between conductors and insulators |
| volume | a measure of how much space the matter of an object takes up |
| matter | anything that has mass and takes up space |
| density | the amount of matter in a certain volume of a substance; found by dividing the mass of an object by its volume |
| buoyancy | the upward push of a liquid or gas on an object placed in it |
| element | a pure substance that cannot be broken down into any simpler substances through chemical reactions |
| metal | any of a group of elements that conducts heat and electricity, has a shiny luster, and is flexible |
| atom | the smallest unit of an element that has the properties of that element |
| nucleus | the center of an atom that has most of its mass |
| proton | a particle in the nucleus of an atom that carries one unit of positive electric charge |
| neutron | a particle in the nucleus of an atom that has no electric charge |
| electron | a particle in the space outside the nucleus of an atom that carries one unit of negative electric charge |
| molecule | a particle that contains more than one atom joined together |
| malleability | the ability to be bent, flattened, hammered, or pressed into new shapes without breaking |
| ductility | the ability to be pulled into thin wires without breaking |
| corrosion | the gradual wearing away of a metal by combining with nonmetals in its environment |
| weight | a measure of how gravity pulls an object |
