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CHEM 120 CHARMBERLAIN COLLEGE OF NURSING FINAL EXAM |BRAND NEW EXAM QUESTIONS AND CORRECT ANSWERS ALL GRADED A+|GUARANTEED SUCCESS|LATEST UPDATE 2024$12.49
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CHEM 120 CHARMBERLAIN COLLEGE OF NURSING FINAL EXAM |BRAND NEW EXAM QUESTIONS AND CORRECT ANSWERS ALL GRADED A+|GUARANTEED SUCCESS|LATEST UPDATE 2024
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CHEM 120 CHARMBERLAIN COLLEGE OF NURSING
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CHEM 120 CHARMBERLAIN COLLEGE OF NURSING
CHEM 120 CHARMBERLAIN COLLEGE OF NURSING FINAL EXAM |BRAND NEW EXAM QUESTIONS AND CORRECT ANSWERS ALL GRADED A+|GUARANTEED SUCCESS|LATEST UPDATE 2024
Chemistry - ANSWER-The study of the properties of matter and how matter changes
Basic Unit in Chemistry - ANSWER-atom
Types of Chemi...
CHEM 120 CHARMBERLAIN COLLEGE OF
NURSING FINAL EXAM 2024-2025|BRAND
NEW EXAM QUESTIONS AND CORRECT
ANSWERS ALL GRADED A+|GUARANTEED
SUCCESS|LATEST UPDATE 2024
Chemistry - ANSWER-✔The study of the properties of matter and how matter
changes
Basic Unit in Chemistry - ANSWER-✔atom
Types of Chemistry - ANSWER-✔Green Chemistry
Sustainable Chemistry
green chemistry - ANSWER-✔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 - ANSWER-✔replacement of mercury fluorescent light
bulbs with efficient mercury free light bulbs
Green Chemistry Solar Fuels - ANSWER-✔sunlight is abundant source of energy
plants store solar energy as chemical energy via photosynthesis
artificial photosynthesis - ANSWER-✔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 - ANSWER-✔designed to meet the needs of the present
generation without compromising the needs of future generations
Matter - ANSWER-✔Anything that has mass and takes up space
mass - ANSWER-✔A measure of the amount of matter in an object
,weight - ANSWER-✔A measure of the gravitational force exerted on the matter of
an object.
Classes of Matter - ANSWER-✔Solids, Liquids, Gas
Solid - ANSWER-✔Definite shape and volume
vibration
ice, brick, wood,
liquid - ANSWER-✔A state of matter that has no definite shape but has a definite
volume.
move in irregular pattern
petrol, vinegar, paint, water
gas - ANSWER-✔A state of matter with no definite shape or volume
freely move continuously- far apart
helium, oxygen, carbon monoxide, hydrogen
melting point - ANSWER-✔The temperature at which a solid becomes a liquid
Vaporation - ANSWER-✔Liquid to gas
boiling Point - ANSWER-✔temp at which liquid escapes and becomes a gas
condensation - ANSWER-✔Gas to liquid
freezing - ANSWER-✔liquid to solid
occurs at freezing point/same as melting point
Sublimation - ANSWER-✔A change directly from the solid to the gaseous state
without becoming liquid
Ex: dry ice
2 categories of matter - ANSWER-✔substances and mixtures
Substance - ANSWER-✔A single kind of matter that is pure and has a specific set of
properties.
Substance contains - ANSWER-✔Elements and Compounds
Elements - ANSWER-✔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 - ANSWER-✔2 or more elements chemically combined
many exist as groups of atoms bonded together as molecules
, Atoms - ANSWER-✔Building blocks of matter
smallest particle in an element
Aristotle - ANSWER-✔A Greek Philosopher,
all matter is composed of 4 elements
all matter is continuous not atomistic
WEAF- water, earth, air, water
Atomos - ANSWER-✔Lecuippus/democritus
point at which matter can no longer be subdivided
Mixtures - ANSWER-✔A combination of two or more substances that are not
chemically combined
homogeneous mixture - ANSWER-✔a mixture that is uniform in composition;
components are evenly distributed and not easily distinguished
Ex: sugar and water
heterogeneous mixture - ANSWER-✔A mixture that is not uniform in composition;
components are not evenly distributed throughout the mixture
Ex: oil and water
Measurement of Matter - ANSWER-✔mass
Measurements of length - ANSWER-✔meters
1 m= 100 cm
1000 m=1 km
0.0254 m = 1 inch
Measurement of mass - ANSWER-✔kilograms
0.454 kg=1 lbs
1 kg= 2.2 lbs
.001 kg= 1 g
1g= 1000 mg
Measurement of volume - ANSWER-✔liter (L)
1 gal = 3.79 L
.26 gal= 1 L
1000 ml = 1 L
measurement of time - ANSWER-✔seconds
measurement of temperature - ANSWER-✔Kelvin (K)
Amount of substance - ANSWER-✔mole (mol)
, A mole of a substance - ANSWER-✔is the amount of a substance which contains 6 X
10^23 particles of that substance
Measurement of electric current - ANSWER-✔ampere
when moving to a bigger unit- divide
when moving to smaller unit- multiply
Convert 0.0123456 km to m - ANSWER-✔move decimal 3 places to right
12.3456 m
Convert 25 kg to g to mg - ANSWER-✔25 kg = 25,0000 g= 25,000000 mg
Density - ANSWER-✔mass/volume
Calculate Density of Metal Sample with a mass of 18.96 g and a volume of 4.32 cm3
- ANSWER-✔D= M/V
D= 18.96g/4.31 cm3
D= 4.40 g/cm3
Energy - ANSWER-✔the ability to do work
the ability to change matter, physically or chemically
Types of energy - ANSWER-✔potential and kinetic
potenial energy - ANSWER-✔energy that is stored in an object due to its position or
condition of an object.
kinetic energy - ANSWER-✔Energy in motion (gases)
Heat - ANSWER-✔The energy transferred from a hotter object to a cooler one
Measurement of heat - ANSWER-✔calories or joules
1 cal is the amount of heat required to change the temp of 1.00 g of water at 1.00
degrees C
1 cal= 4.184 J
Temperature - ANSWER-✔is the average amount of kinetic energy of the atoms
molecules that make up an object
body temperature - ANSWER-✔the balance between the heat produced by the
body and the heat lost from the body
Normal body temperature - ANSWER-✔98.6 F
(37 C)
310 K
Temperature Conversions - ANSWER-✔F=32 + 1.8 x C
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