Ch 2 Flashcards
Intensive property
A property that depends on the type of matter in a sample, not the amount
Extensive property
A property that depends on the amount of matter in a sample
Mass
A measure of the amount of matter an object contains
Volume
A measure of the space occupied by an object
Mass
The amount of matter an object contain
Weight
The force that gravity exerts on an object to measure its mass
Substances
Matter that has a uniform and definite composition
Physical property
Is a quality or condition of a substance that can be observed or measured without changing the substance’s composition
Physical change
Some properties of a material change, but the composition of the material does not change
Solid
Definite shape, definite volume, very slight expansion when heated, always incompressible
Liquid
Indefinite shape, definite volume, moderate expansion on heating, always incompressible
Gas
Indefinite shape, indefinite volume, great expansion when heated, readily compressible
Mixture
Physical blend of two or more components
Solution
Same thing as homogenous mixture
Separation techniques for homogenous mixture
Distillation
Magnetism
Evaporation
Filtration
Element
Simplest form of matter that has a unique set of properties
Compounds
Substances that contain two or more elements chemically combined in a fixed proportion
~can be broken down into simpler substances by chemical means, elements cannot
Precipiate
Solid that forms at bottom of a liquid
Reactant
Substance present at start of a reaction
Product
Substance present at the end of a reaction
