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;
24 Cards in this Set
- Front
- Back
Pure Substances
|
matter that always has exactly the same composition
|
|
Element
|
substance that cannot be broken down into simpler substances
|
|
Atom
|
smallest particle of an element
|
|
Compound
|
substance that is made from two or more simpler substances and can be broken down into those simpler substances
|
|
Heterogeneous Mixture
|
the parts of the mixture are noticeably different from one another
|
|
Homogeneous Mixture
|
the substances are so evenly distributed that it is difficult to distinguish one substance in the mixture from another
|
|
Solution
|
when substances dissolve and form a homogeneous mixture
|
|
Suspension
|
heterogeneous mixture that separates into layers over time
|
|
Colloid
|
contains some particles that are intermediate in size between the small particles in a solution and the larger particles in a suspension
|
|
Physical Property
|
any characteristic of a material that can be observed and measured without changing the composition of the substances in the material
|
|
Viscosity
|
the tendency of a liquid to keep from flowing
|
|
Conductivity
|
material's ability to allow heat to flow
|
|
Malleability
|
ability of a solid to be hammered without shattering
|
|
Ductility
|
ability to be drawn into a wire
|
|
Melting Point
|
the temperature at which a solid changes to a liquid
|
|
Boiling Point
|
the temperature at which a substance boils
|
|
Filtration
|
process that separates materials based on the size of their particles
|
|
Distillation
|
process that separates the substances in a solution based on their boiling points.
|
|
Physical Change
|
occurs when some of the properties of a material change, but the substances in the material remain the same.
|
|
Chemical Property
|
any ability to produce a change in the composition of matter
|
|
Flammability
|
material's ability to burn in the presence of oxygen
|
|
Reactivity
|
property that describes how readily a substance combines chemically with other substances
|
|
Chemical Change
|
occurs when a substance reacts and forms one or more new substances
|
|
Precipitate
|
any solid that forms and separates from a liquid mixture
|