Chapter 1 Flashcards
Mass
Amount of matter present in a sample
Matter
Anything that has mass and occupies space
Solid
Definite shape and definite volume
Liquid
Indefinite shape definite volume
*takes the shape of its container to the extent that it fills the container
Gas
Indefinite shape indefinite volume
*completely fills its container adopting both the containers volume & it’s shape
State of matter of a particular substance depends on:
- Temperature
- Surrounding pressure
- Strength of the forces holding its structural particles together
Physical states of matter are:
Solid
Liquid
Gas
Physical property
- Characteristics that can be observed without changing the basic identity of the substance.
- Includes color, odor, physical state, melting point, boiling point, hardness
Chemical property
Characteristic that describes the way a substance undergoes or resists change to form a new substance
Ex: copper objects turn green in air
Iron metal rusts in an atmosphere of moist air. Is this a physical or chemical property?
Chemical property
Mercury metal is a liquid at room temperature. Is this is physical or chemical property?
Physical property
Nickel metal dissolves into acid to produce a light green solution. Is this a chemical or physical property?
Chemical property
Physical change
Process in which a substance changes its physical appearance but not it’s chemical composition.
Ex: boiling or freezing water
Chemical change
Process in which chemical composition of a substance changes. Involves conversion of material into one or more new substances.
Ex: rusting of iron objects left exposed to moist air
Pure substance
Single kind of matter that cannot be separated into other kinds of matter by any physical means.
