Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
15 Cards in this Set
- Front
- Back
|
Chemistry |
The study of matter and the changes that matter undergoes. |
|
|
Matter |
The physical material of the universe, it is anything that has mass and occupies space. |
|
|
Property |
Any characteristic that allows us to recognize a particular type of matter and to distinguish it from other types. |
|
|
Mixtures |
Combinations of two or more substances in which each substance retains its chemical identity. |
|
|
Law of constant composition (or law of definite proportions) |
The observation that the elemental composition of a compound is always the same. |
|
|
Components |
Substances making up a mixture |
|
|
Heterogeneous |
A mixture that does not have the same composition, properties, and appearance throughout |
|
|
Homogeneous ( or solutions) |
Mixtures that are the same throughout |
|
|
Intensive properties |
Like temperature and melting point, they do not depend on the amount of sample being examined and can be useful because many can be used to identify substances. |
|
|
Extensive properties |
Depend on the amount of sample, with two examples being mass and volume. They relate to the amount of substance present. |
|
|
Distillation |
Separates homogeneous mixtures and depends on the abilities of the substances to form gases. |
|
|
Mass |
A measure of the amount of material in an object. |
|
|
Precision |
A measure of how closely individual measurements agree with one another |
|
|
Accuracy |
How closely individual measurements agree with the correct value. |
|
|
Dimensional Analysis |
Units are multiplied together, divided into each other, or "canceled". |
