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Chem 2A cheat sheets, Cheat Sheet of Chemistry

Chem 2A picture study guides, graphs and definitions of early chapter need to know exam information.

Typology: Cheat Sheet

2020/2021

Uploaded on 05/17/2021

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1.Properies
Stotes
of
Motep2
Sublimation
[Iefirnika
shape and e
derite
No
definite
shape
Boiling/
Evaporation
wolume and
volume
Melting
Molecues
are
lecie
are
iess
Far
apart
casey
packed
closey
psckad
Solid
Liquid
Gas
rce
i tiractiC
tihan
ery
less
is
sxrong
iti
n.2.
state
it
is
difficult to
Freezing
Condensation
ompressed
more
Casily
than
solids
Easy
to
compress
Compress
Deposition
O'c
32°
Matter
212'F
Water
boils
100C
Water
boils
Pure
substance
98.6'F
Mixture
Normal
body
temperature
37"C
Normal
body
temperature
Homogeneous
Heterogeneous
Element
Compound
.32°F
Water
freezes
mxture mixture
0°C
Water
freezes
Celsius
Therrmometer
Fahrenheit
Thermometer
HOMOGENEOUS
MIXTURES
PURE
SUBSTANCE
VERSUS
VERSUS
HETEROGENEOUS
MIXTURESs
MIXTURE
onogenous
inixiures
hava
unifom
composilion
throughout
he
nmixt
tarogous
miures
Pure
substances
are
Mixtures
are made up
onpison
yhuehay
of
several
substauces
made
of
only
one
matter:
hus
the
that
are
not
eomposition
is
the
same
throughout
chemically
bonded
Komponenis arg
19
Chemical
and
Chemical
and
physical
properties
physical
properties
ire
constant
may
varTY
Can
be
categorised
as
gas,
liquid
and
Categorised
as
homogencous
and
heterogeeneous
elerEenus
hwtures
Have
large
Pallicle
sizes
sofid
Examples
include
sand
and
sugar,
oil
Examples
include
Compments
cannot
be
separated
easily
ompoinents
can
be
separated
easily
pure
water.
llydroge
gis.
gold
and
water
Visit
ww.pedn
Viit
www.pedina.com
pf3

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1.Properies Stotes of Motep

Sublimation

[Iefirnika shape and e derite No definite shape

Boiling/ Evaporation

wolume (^) and volume Melting

Molecues are lecie are iess Far apart

closey psckad casey packed

Solid (^) Liquid Gas rce i (^) tiractiC (^) tihan is sxrong ery^ less iti n.2. state

it is difficult to ompressed more Freezing Condensation Casily than solids

Easy to compress Compress

O'c 32° Deposition

212'F Matter 100C Water boils Water boils

Pure substance

98.6'F Normal body temperature Mixture 37"C Normal body temperature

.32°F Element Compound Homogeneous Heterogeneous

0°C Water^ freezes^ mxture^ mixture Water freezes

Celsius Therrmometer (^) Fahrenheit Thermometer

HOMOGENEOUS MIXTURES VERSUS PURE^ SUBSTANCE HETEROGENEOUS MIXTURESs VERSUS MIXTURE onogenous inixiures hava unifom

composilion

throughout he nmixt

tarogous miures

Pure substances are (^) Mixtures are made up

onpison yhuehay made of only one of several substauces

matter: hus the (^) that are not eomposition is the same throughout

chemically bonded

Komponenis arg

Chemical and (^) Chemical and

physical properties physical properties

ire constant (^) may varTY

Can be categorised as gas, liquid and

Categorised as homogencous and heterogeeneous

elerEenus

hwtures Have large

Pallicle sizes

sofid

Examples include sand and sugar, oil

Examples include Compments cannot be separated easily

ompoinents can be separated easily

pure water. llydroge gis. gold and water Viit www.pedina.com Visit ww.pedn

Chemical and Physical (^) Changes

Elements V. Compounds Chemical^ change:^ A^ Physical^ change:^ Matter

chemical reaction forms changes form but not

gOMPOUNDS (^) new products. (^) chemical identity.

wo or more elements nne be breeaA thatcombine chemically ple substancos MKAL

EMample Carban, wOVEeh Ntrogen, cold

anythtng on the penadlc

table

Examples: Water (H20), Carbon Dioxide (C02), DNA, Proteins, eto |Combustion Rotting Melting Shredding

Elements are madeup of atoms

'

Rusting Digestlon Blling Chopping

2. MATH AND QUANTITATIVE RELATIONSHIPS:

Significant Figures Rules Sig Figs and Calculations

Significant Figures can be done using a set of around S rules,

With a lot of complications for how to deal with zeroes. Not significant: Not significant: Signilicant Multiplication^ and^ Addition^ and all zeros between Division: round the nonzero numbers answer to the saime

zero for (^) zeros used only Subtraction:^ round^ the "cosmetic"* to locatc the (^) answer to the same purpose (^) decimal point number of significant number of decimal

figures as the least places as the value^ with

certain measurement the fewest

Significant Signilicant: all nonzero

a number to the right 2.^

x (^) 14.25 41.

zeros at the end of (^) 7.050+6.2 13. intcgers (^3) siyh

Volume

1 mL=1 cm*

of decimal point^3 Mass

1 lb 453.59 g

Length Time

1 mile 1.609 km 60 s^1 min

1 in 2.54 cm 1 ft 12 in 3 ft 1 yd

1L=1.06qts

1 gallon=3.78 L 1 fl oz = 29.57 mL

+1 lb = 16 oz 60 min 1hr

1 lb 7.00x10 grains^24 hr^1 day

1 grain = 64.8 mg

1 kg = 2.20 lbs

1 ton 2000 lbs 1 km 0.621 (^) miles *1Ka= \KD

365 days =1 year

10 yr^1 decade 1 fluidram = 3.72 mL 100 yr 1 century

1m 39.4in 2 pts^ 1qt

5280 ft = 1 mile

Energy 4.184J1 cal A1 kcal = 1000 cal = 1 food cal (Cal)

Sample Metric Relationships for length

where meter (m) is the base unit:

1 Mm 1,000,000 m 1 km 1000 m

Temperature

10 dm = 1m

T Tc + 273

Tr=(T32)

Tp = ()Tc 4+

100 cm =1m

1,000 mm =1 m

1,000,000 um = 1 m

1,000,000 nm = 1 m

Pressure

1 atm 760 mmHg 760 torr

Paricts

UMbPr

ol (^) o.02 X^1023