click below
click below
Normal Size Small Size show me how
Chemistry Unit Vocab
| Term | Definition |
|---|---|
| Chemistry | the study of the properties of matter and how matter changes |
| Matter | anything that has mass and takes up space |
| Mass | a measure of how much matter is in an object |
| Physical Property | characteristic of a substance that can be observed without changing it into another substance |
| Chemical Property | characteristic of a substance that describes its ability to change into a different substance |
| Solubility | the ability of a substance to be dissolved into a liquid |
| Indicator | a compound that changes in the present of acids or bases |
| Volume | the amount of space the matter occupies |
| Density | the measurement of how much mass of a substance is contained in a given substance |
| Atom | the basic particle from which all elements are made |
| Protons | a particle that has a positive charge |
| Neutrons | a particle that has no electric charge |
| Electrons | a particle that has a negative charge |
| Atomic Number | the number of protrons in a nucleus of its atom |
| Atomic Mass | the number of protrons and neutrons in its atom |
| Molecule | group of two or more atoms held together by chemical bonds |
| Element | a pure substance that cannot be changed into a simpler substance |
| Metals and Nonmetals | two major groups of elements that have different physical properties |
| Metalloids | have both properties of metals and nonmetals |
| Chemical Bond | the force of attraction between two atoms |