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Terms in this set (526)
Chemistry The study of the properties of matter and how
matter changes
Basic Unit in Chemistry atom
Types of Chemistry Green Chemistry
Sustainable Chemistry
green chemistry uses materials and processes that are intended to
prevent or reduce pollution at its source
replacing rare hazardous with more abundant less
hazardous
Example of green chemistry replacement of mercury fluorescent light bulbs
with efficient mercury free light bulbs
Green Chemistry Solar Fuels sunlight is abundant source of energy
plants store solar energy as chemical energy via
photosynthesis
, artificial photosynthesis can be used to generate hydrogen fuel
H fuel can then be reacted with O to produce heat
and electricity
water---->hydrogen + oxygen
sustainable chemistry designed to meet the needs of the present
generation without compromising the needs of
future generations
Matter Anything that has mass and takes up space
mass A measure of the amount of matter in an object
weight A measure of the gravitational force exerted on the
matter of an object.
Classes of Matter Solids, Liquids, Gas
Solid Definite shape and volume
vibration
ice, brick, wood,
liquid A state of matter that has no definite shape but has
a definite volume.
move in irregular pattern
petrol, vinegar, paint, water
gas A state of matter with no definite shape or volume
freely move continuously- far apart
helium, oxygen, carbon monoxide, hydrogen
melting point The temperature at which a solid becomes a liquid