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FSU / Chemistry Engineering Tech / CHM 1045 / How do you identify a homogeneous mixture?

How do you identify a homogeneous mixture?

How do you identify a homogeneous mixture?

Description

School: Florida State University
Department: Chemistry Engineering Tech
Course: General Chemistry I
Term: Spring 2019
Tags: Chem, Chemistry, CHM1045, study, Studyguide, notes, FSU, and CHM1045FSU
Cost: 50
Name: Study Guide for CHM 1045 Exam 1
Description: Detailed information and highlighted Need-to-know formulas/concepts for exam.
Uploaded: 01/25/2019
48 Pages 34 Views 3 Unlocks
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Exam 1


How do you identify a homogeneous mixture?



Study

guide

o Chemistry

Lo science

SOUL

SE

that

describes

Stud SOU

matter

to composition o properties

• Matter

Lo it occupies space t has mass

interactions

• Atorn

Losmallest

unit of matter

• Element

Los pure substance that cannot be broken - down into simples istable substances up made of ONE ATOM


How do you know how many sig figs round to?



Don't forget about the age old question of What are the basics of inheritance?

1

to Atomic Number

Element symbol H

Hydrogen Atomic weight/mass of 1.008

to Element Name

o Molecule

La More than one atom bonded together Qon to Electron é Proton Pipt i Neutron nno

-

1 039 +1 Compound

Lo Substance that com be broken down La composed of 2 or more different elements


What is the law of definite and multiple proportions?



If you want to learn more check out What are some examples of state devolution?

• Natural Laws

-Law of Conservation of Mass

a Lo mass of closed /isolated

system remains constant

Law of

Lo

Conservation of Energy Eneagy cannot be created nor destroyed

• States

of

Matter We also discuss several other topics like What are the three major groups of archaea?

Look

...

State solid

Shape Definite ou Indefinite 1. Indefinite

Volume Definite

Definite Indefinite

Liquid

gas

voyaziddion

Condensation

sation

& Liquid

deposition

sublimation

bu paaud

meltina

• Substance

I ho matter which has identical composition If you want to learn more check out What are the molecules responsible for membrane transport?

☆ properties Lo elements B compounds Lo cannot be broken down by physical means

SOUP

• Mixtures

Lo combination of 2 or more substances Lo can be seperated by physical means.

- Homogeneous Mixtures

- Lo un FORM ls it is the same throughout ie. water, air, vodka

Heterogeneous Mixture

- Lo not uniform

Lo different components 1.e cereal with milk, ice in soda, you Don't forget about the age old question of What is a lattice structure?
If you want to learn more check out What does a data management platform do?

can separate candies according to color.

Separation

• Filtration

• Destillation

• SI Units

Prefix

Symbol

Multiplier

Tera giga

1013

Tony 10-2

fontodu I

Mega [Kilo

Deci Centi Milli Micro Nane Pico

Femto

1003 106

10-9

1015

• Scientific Notation

- 42, 800,000. = 4.28 x 107 - 0.00000577 = 5.77x10-6

o Density

lo

d = mass

>

Density

Density =

hog/mol toglom3 to 9/L

for Liquids for gas

• Significant

figures

Rules

-

2 significant

digits

Any zeros between are significant

lie. 4.0000006

20.03

O B significant Figures

significant figures

4

- Non-

zero digits are always significant lie, 13.6 08 3 sig. fig.

- Leading zero's never

ie. 0.000432

significant

3 sig. figures

- Zeros at the end (decimal portion) are always as

significant

ie. 40.0 3 sig. figures

0.07200 4 sig. figures

40 f sig. Figure no decimal

40. 2 sig. Figures

Significant Figures Rules (continued)

- Addition / substraction

-Lo your final answer may have no

more significant figures to the Right of the decimal than the

LEAST # of sig. figures je. 3862 +2.4=41.0

- 38.62 +

Least

2

E

sig. Fig

2 + 2.41 41.0.2

~141.0

Round

- Multiplication Division

Lo The LEAST # of sig. fig. in the

problem determines the # of sig. fig.

in the answer le. 38.62 x 2.4 3.92:628 -193

4 sig. fig. 2 sigfig aCcurate - Correct . . Accuracy

The How close a measured value is to

.. the actual (true) value pRecise

Bullseve Repeating or Recentinalo Precision

L in How close the measured vales are

to each other s hitting Same spot, but mayle not the correct spot

• Heat

The form of energy

Los Always Floats spontaneously from . Body to a colder body

a hotter

Heat

(hotter) I, 2 Tg (colder)

SOUD

• Temperature.

Lo measure of the intensity of heat - Fahrenheit F

MP=32°F . BP=212°F - Celcius °C

MP=0.0°C/BP = 100°C -Kelin K . MP = 273K / BP = 273K

Melting Point Boiling Point Lo Conversion

• Kelvin a Celcius K= °C +273 °C = K -273

Coup

a

no Fahrenheit

°F 2 (°C)(1.8)+32

Celcius ° C = (°F - 32)

Tie

T

on amount

• Propectus aro - Intensive - they do not depend

of matter present L - Extensive - they do depend on

of matter present

amount

o Law of Definite proportions

LA Samples of a compound will always

contain the same proportion of elements by mass

o Law of Multiple Proportions

Lo when elements combine they do so - in the ratio of small whole numbers

i.e. Carbon & Oxygen react to form

co or CO2, but not con

Mass #

o Mass Number

A

Ls =

#protons

#natrons

4

to element

o Atomie Number oz

Studvso

Loe #protons

Atomme

o

#protons =

#electrons

• Nuclide

Symbols

37 C

37 Et

17

Stad

Full

Short

Soup

SESO

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