Glossary Flashcards
Chemistry
Study of elements and the compounds tehy form, and the reactions they undergo
Matter/ Material
Gas, liquid, or solid.
Anything that has MASS / VOLUME
Properties
Characteristics that give matter its unique identity
Extensive Prop
A property that depends on the AMOUNT of the material in a sample such as MASS/ VOLUME
Intensive prop
A property that is INDEPENDENT of the amount of the material in a sample such as DENSITY / COLOR
Physical properties
properties that can be measured without changing the composition of a substance such as COLOR/ MELTING PT
Chemical properties
properties that describe the composition and reactivity of a substance
i.e HOW IT CHANGES INTO OTHER SUBSTANCES
Substance/ component
A single, distinct chemical species
i.e PURE MATERIAL, such as water and oxygen.
It has a composition that remains unchanged
States of matter
the 3 forms in which matter cna be found ; solid, liquid/ gas
Change of States
Transformations of matter from one state to another, such as from a liquid to a gas.
eg Boiling water= produces steam
Mixture
Combination of 2 or more substances in which each substance retains its own chemical identity
Element
A substance that cannot be separated into more simple substances by chemical . physical means such as Oxygen
Compound
A substance composed of 2/ more elements combined chemically in FIXED PROPORTIONS and are classified as MOLECULAR (water, H2o) and NON MOLECULAR (sodium chloride NaCl)
Homogenous mixture
Composition is uniform throughout.
I.e all mixture have the same INTENSIVE PROPERTIES, eg air/ sea water
Heterogenous mixture
Composition is not uniform.
i.e intensive properties vary from place to place in mixture ( MILK/ ROCKS)