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;
16 Cards in this Set
- Front
- Back
|
Matter |
everything that makes up the universe |
|
|
Atoms |
make up matter (building blocks), do not change, combine to form molecules |
|
|
Compounds |
combination of 2+ elements |
|
|
Molecule |
2+ elements bonded together |
|
|
Mixture |
combination of 2+ substances (not a pure substance) |
|
|
Heterogeneous mixture |
when you can physically take items out of the mixture |
|
|
Homogeneous mixture |
uniform throughout |
|
|
Physical properties |
measurable without changing the substance |
|
|
Chemical properties |
describes the reactivity of a substance |
|
|
Physical changes |
alter the physical state |
|
|
Chemical changes |
chemical reactions |
|
|
Intensive properties |
dont depend on the amount of substance and can be used to identify substance |
|
|
Extensive properties |
do depend on the amount of substance and provide you with no info about the substance |
|
|
Kelvin --> celcius formula |
celsius + 273 |
|
|
Exact #'s |
numbers that can be counted |
|
|
Inexact #'s |
need to be measured and are usually exact |
