Exam (elaborations)
CHEM-120 CHAMBERLAIN FINAL EXAM with correct answers 100% verified
- Course
- CHEM 120
- Institution
- Chamberlain College Of Nursing
CHEM-120 CHAMBERLAIN FINAL EXAM with correct answers 100% verified
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CHEM-120 CHAMBERLAIN FINAL EXAM withcorrect answers 100% verified
Chemistry - ** VERIFIED ANSWERS🔰 ✔✔The study of the properties of matter and how
matter changes
Basic Unit in Chemistry - ** VERIFIED ANSWERS🔰 ✔✔atom
Types of Chemistry - ** VERIFIED ANSWERS🔰 ✔✔Green Chemistry
Sustainable Chemistry
green chemistry - ** VERIFIED ANSWERS🔰 ✔✔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 - ** VERIFIED ANSWERS🔰 ✔✔replacement of mercury
fluorescent light bulbs with efficient mercury free light bulbs
Green Chemistry Solar Fuels - ** VERIFIED ANSWERS🔰 ✔✔sunlight is abundant source
of energy
plants store solar energy as chemical energy via photosynthesis
artificial photosynthesis - ** VERIFIED ANSWERS🔰 ✔✔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 - ** VERIFIED ANSWERS🔰 ✔✔designed to meet the needs of the
present generation without compromising the needs of future generations
Matter - ** VERIFIED ANSWERS🔰 ✔✔Anything that has mass and takes up space
mass - ** VERIFIED ANSWERS🔰 ✔✔A measure of the amount of matter in an object
weight - ** VERIFIED ANSWERS🔰 ✔✔A measure of the gravitational force exerted on the
matter of an object.
Classes of Matter - ** VERIFIED ANSWERS🔰 ✔✔Solids, Liquids, Gas
Solid - ** VERIFIED ANSWERS🔰 ✔✔Definite shape and volume
vibration
ice, brick, wood,
liquid - ** VERIFIED ANSWERS🔰 ✔✔A state of matter that has no definite shape but has
a definite volume.
move in irregular pattern
petrol, vinegar, paint, water
gas - ** VERIFIED ANSWERS🔰 ✔✔A state of matter with no definite shape or volume
freely move continuously- far apart
helium, oxygen, carbon monoxide, hydrogen
melting point - ** VERIFIED ANSWERS🔰 ✔✔The temperature at which a solid becomes a
liquid
,Vaporation - ** VERIFIED ANSWERS🔰 ✔✔Liquid to gas
boiling Point - ** VERIFIED ANSWERS🔰 ✔✔temp at which liquid escapes and becomes a
gas
condensation - ** VERIFIED ANSWERS🔰 ✔✔Gas to liquid
freezing - ** VERIFIED ANSWERS🔰 ✔✔liquid to solid
occurs at freezing point/same as melting point
Sublimation - ** VERIFIED ANSWERS🔰 ✔✔A change directly from the solid to the
gaseous state without becoming liquid
Ex: dry ice
2 categories of matter - ** VERIFIED ANSWERS🔰 ✔✔substances and mixtures
Substance - ** VERIFIED ANSWERS🔰 ✔✔A single kind of matter that is pure and has a
specific set of properties.
Substance contains - ** VERIFIED ANSWERS🔰 ✔✔Elements and Compounds
Elements - ** VERIFIED ANSWERS🔰 ✔✔A molecule composed of one kind of atom;
cannot be broken into simpler units by chemical reactions.
represented by chemical groups:
Cl, H, Mg
Compounds - ** VERIFIED ANSWERS🔰 ✔✔2 or more elements chemically combined
many exist as groups of atoms bonded together as molecules
, Atoms - ** VERIFIED ANSWERS🔰 ✔✔Building blocks of matter
smallest particle in an element
Aristotle - ** VERIFIED ANSWERS🔰 ✔✔A Greek Philosopher,
all matter is composed of 4 elements
all matter is continuous not atomistic
WEAF- water, earth, air, water
Atomos - ** VERIFIED ANSWERS🔰 ✔✔Lecuippus/democritus
point at which matter can no longer be subdivided
Mixtures - ** VERIFIED ANSWERS🔰 ✔✔A combination of two or more substances that
are not chemically combined
homogeneous mixture - ** VERIFIED ANSWERS🔰 ✔✔a mixture that is uniform in
composition; components are evenly distributed and not easily distinguished
Ex: sugar and water
heterogeneous mixture - ** VERIFIED ANSWERS🔰 ✔✔A mixture that is not uniform in
composition; components are not evenly distributed throughout the mixture
Ex: oil and water
Measurement of Matter - ** VERIFIED ANSWERS🔰 ✔✔mass
Measurements of length - ** VERIFIED ANSWERS🔰 ✔✔meters
1 m= 100 cm
1000 m=1 km
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