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;
36 Cards in this Set
- Front
- Back
|
Matter that always has exactly the same composition an element or compound |
Pure substances |
|
|
A substance that cannot be broken down into simpler substances |
Element |
|
|
A substance that is made from two or more elements that can be broken down into simpler substances |
Compound |
|
|
Why is water a compound |
It's chemically combined and can't be broken down |
|
|
Two or more elements or compounds not chemically combined |
Mixture |
|
|
A mixture that appears to contain only one substance is a |
, solution |
|
|
Symbol for gold |
Au |
|
|
Symbol for aluminum |
Al |
|
|
A type of mixture in which the parts of the mixture are noticeably different from one another |
Heterogeneous mixture |
|
|
Mixture can be classified as a solution suspension or colloid based on |
The size of its largest particles |
|
|
A heterogeneous mixture that separates into layers over time |
Suspension |
|
|
The ability of a solid to be hammered without shattering |
Malleability |
|
|
When a physical change is a sample what does not change |
The composition |
|
|
Flammability is the materials ability to burn in the presence of |
Oxygen |
|
|
A substance that has a high reactivity does what |
Easily combined chemically with other substance |
|
|
So solid that forms and separates from a liquid mixture |
Precipitate |
|
|
Mother that always has exactly the same composition is classified as a |
Pure substance |
|
|
The symbols for elements have either |
Capital or lowercase letters |
|
|
A compound can be made from two or more elements or other _________ joined together in a fixed proportion |
Substances |
|
|
The substance in a _________ mixture are evenly distributed throughout the mixture |
Homogeneous |
|
|
Measuring ________ can be used to test the purity of some substances |
Density |
|
|
A _______ change occurs when I met material changes shape or size, but the composition of the material does not change |
Physical |
|
|
_______ properties can be observed only when the substances in a sample of matter are changing into different substances |
Chemical |
|
|
Rust forms because iron and oxygen are highly ______ elements |
Reactive |
|
|
A cake rises as it bakes because a chemical change causes ____ to be produced |
a gas |
|
|
When a metal changes color because it has been heated, a _____ change occurred. When metal changes color because it reacted with another substance, a _____ change occured |
Physical Chemical |
|
|
How do the properties of a compound compare to the properties of the elements it contains |
They are different |
|
|
How is the composition of a substance different from the composition of a mixture |
The composition of a substance is fixed and the composition of a mixture is not fixed |
|
|
The tendency of a liquid to keep from flowing |
Viscosity |
|
|
How do changes in temp affect the viscosity of a liquid |
Viscosity decreases when the liquid is heated |
|
|
A materials ability to burn in the presence of oxygen |
Flammability |
|
|
What kind of change is taking place of you see white mold growing on a strawberry |
Chemical |
|
|
What are 3 common clues a chemical change has occurred |
Change in color, production of gas, and formation of precipitate |
|
|
Pizza Sugar Diamond |
M C E |
|
|
Gasoline Water Gold |
M C E |
|
|
Milk Iron |
M E |
