chemistry exam 1 flash cards

Chemistry 120 with Musfeldt, J. at University of Tennessee - Knoxville

About this deck

By: Greg May
Textbook:

Student's Guide for Chemistry: The Central Science
Created: 2010-09-28
Size: 47 flashcards
Views: 152

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study of the composition, structure, properties, and changes of matter

chemistry

two or more atoms

molecule

states of matter

solid, liquid, gas

two kinds of pure substances

elements and compounds

combination of several elements or compounds

mixture

describe physical change

appearance changes not composition

describe chemical change

substance is transformed into a chemically different substance

how closely different measurements agree with one another

precision

how closely a measurement agrees with the true value

accuracy

basic building blocks of matter

atoms

smallest units of an element

atom

what is composed of subatomic particles

atoms

nucleus contains

protons and neutrons

1 amu=

1.66054*10^-24g

atomic number

# of protons in nucleus

mass number

sum of protons and neutrons

atoms of the same element that differ in mass number

isotopes

atoms combine to form

molecules

charged particles

ions

cations

+charge(loose an electron)

anions

-charge(gain an electron)

the study of quantitative relationships between chemical formulas and chemical equations

stiochiometry

combination reaction

two reactants combine to form one product

decomposition reaction

one reactant forms two products

combustion reaction

a hydrocarbon reacts with O2 to form CO2 and H20

the sum of the atomic weights of the atoms in its formula(also molecular weight)

formula weight

one mole is also known as

avogadro's number

empirical formula is found by?

finding percent composition, and setting up a ratio

what reactant is completely consumed in the reaction

limiting reactant

the quantity of product calculated to form when all the limiting reagents react

theoretical yeild

percent yield

(actual/theoretical)*100

a spectrum that contains all wave length's

continuos spectrum

a spectrum that only contains certain specific wavelenghts

line spectrum

quantum numbers

n, l, m_l, m_s

m_l

-1 to +1

m_s

-1/2 or +1/2

electron goes from higher to lower what is emitted?

light

the allowed wave functions of a hydrogen atom

orbitals

the set of all orbitals with the same n value

electron shell

set of orbitals with the same n value and the same l value

subshell

no two electrons can have the exact same quantum numbers

pauli exclusion principle

the lowest energy is attained by maximizing the number of electrons with the same spin

hund's rule

the outer-shell electrons that are involved in chemical bonding

valence electrons

all electrons that are not valence

core electrons

About this deck

By: Greg May
Textbook:

Solutions to Red Exercises

Student's Guide for Chemistry: The Central Science
Created: 2010-09-28
Size: 47 flashcards
Views: 152

About StudyBlue

“Simply amazing. The flash cards are smooth, there are many different types of studying tools, and there is a great search engine. I praise you on the awesomeness.”
Dennis