SCIENCE Flashcards
WHAT IS MATTER?
MATTER IS ANYTHING THAT OCCUPIES SPACE
STATES OF MATTER
SOLID, LIQUID, GAS, BOSE-EINSTIEN, PLASMA
SOLID
HAVE DEFINITE SHAPE
HAVE DEFINITE VOLUME
CANNOT BE COMPRESSED BY MODERATELY HIGHT PRESSURE
NEGLIGIBLE EXPANSION DURING HEATING
HIGH DENSITY
LIQUIDS
HAVE NO SHAPE
HAVE VOLUME
CAN BE COMPRESSED BUT ONLY IN A NEGLIBLE EXTENT
SLIGHT EXPANSION WHEN HEATING
MODERATE DENSITY
GAS
HAVE NO SHAPE TAKES PLACE OF CONTAINER
HAVE NO VOLUME
CAN BE COMPRESSED AS EXTERNAL PRESSURE IS INCREASED
GREAT EXPANSION WHEN HEATING
LOW DENSITY
PHYSICAL PROPERTIES
Familiar examples of physical properties include density, color, hardness, melting and boiling points, and electrical conductivity.
CHEMICAL PROPERTIES
Examples of chemical properties include flammability, toxicity, acidity, reactivity (many types), and heat of combustion.
CHEMICAL CHANGE
Burning, cooking, rusting and rotting are examples of chemical changes.
PHYSICAL CHANGE
Changes in the size or form of matter are examples of physical change. Physical changes include transitions from one state to another, such as from solid to liquid or liquid to gas. Cutting, bending, dissolving, freezing, boiling, and melting are some of the processes that create physical changes.
COMPOUND
In science, a substance made from two or more different elements that have been chemically joined. Examples of compounds include water (H2O), which is made from the elements hydrogen and oxygen, and table salt (NaCl), which is made from the elements sodium and chloride.
MIXTURE
Examples of Mixtures
Crude oil: A mixture of organic compounds (mainly hydrocarbons)
Seawater: A mixture of various salt and water.
ELEMENTS
Common examples of elements are iron, copper, silver, gold, hydrogen, carbon, nitrogen, and oxygen.
