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;
18 Cards in this Set
- Front
- Back
|
element |
a substance that cannot be broken into simpler substances |
|
|
atom |
smallest unit of matter |
|
|
At room temperature most elements are |
solids |
|
|
A substance that is made from two or more simpler substances |
compound |
|
|
A compound always contains two or more elements joined in |
a fixed proportion |
|
|
The composition of a mixture |
is not fixed |
|
|
heterogeneous mixture |
A mixture in which the parts are noticeably different from one another |
|
|
homogeneous mixture |
A mixture in which the parts are so evenly distributed that is difficult to distinguish one substance in the mixture from another |
|
|
matter |
anything that has mass and takes up space |
|
|
Physical Properties |
any characteristic of a material that can be observed of measured without changing the composition of the substance in the material. |
|
|
Chemical Properties |
properties that can be observed when a substance in matter changes into a different substance |
|
|
oxygen, nitrogen and carbon are examples of |
elements |
|
|
Based on their compositions, materials can be divided into |
pure substances and mixtures |
|
|
volume |
the amount of space that an object takes up |
|
|
mass |
is the amount or matter in an object |
|
|
The metric system |
is based on the number 10 |
|
|
It is the international system of units |
IS |
|
|
a model is |
a representation of an object or event |
