Term
|
Definition
| basic unit of matter (everything is made up of atoms); extremely tiny-cannot be seen with the unaided human eye |
|
|
Term
|
Definition
when two or more atoms bond together
ex: water = 2 hydrogen atoms and 1 oxygen atom or 2 oxygen atoms |
|
|
Term
| Do molecules and atoms move? |
|
Definition
|
|
Term
|
Definition
substance that contains only a single type of atom
ex: silver, oxygen, hydrogen |
|
|
Term
|
Definition
has only one type of component, nothing added
ex: pure silver, pure water |
|
|
Term
|
Definition
| a substance that consists of two or more different types of atoms bonded together; makes a NEW substance; cannot be separated by physical means ex: table salt (NaCl) |
|
|
Term
|
Definition
combination of different substances that are not bonded together; remain the same substances; can be separated by physical means
ex: fruit salad, sugar water |
|
|
Term
| states (or forms) of matter |
|
Definition
| different forms in which matter can exist; solid, liquid, gas, and plasma |
|
|
Term
|
Definition
| has a fixed volume and a fixed shape; particles are close together and form a pattern, can vibrate |
|
|
Term
|
Definition
| fixed volume, but no fixed shape; takes the shape of its container; particles are attracted to each other and "slide" |
|
|
Term
|
Definition
| no fixed volume or shape; particles are not close together and can move easily and quickly |
|
|
