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chemistry mid term

QuestionAnswer
what is the relationship among wavelength, frequency, and the speed of light in terms of an equation? λν = c
The speed of light is equal to what numerical value? 3.00 x 10 to the 8th
the colors of the visible spectrum are commonly learned by an acronym. What is the acronym we use? ROYGBIV
Name 2 waves that have a long wavelength and a low frequency. micro, inferred, radio
name 2 waves that have short wavelength and a high frequency. ultra violet, gamma, x rays
The AMPLITUDE of a wave is the number of complete waves passing a fixed point in a given time. false
The wavelength of microwave radiation is GREATER THAN the wavelength of visible light. true
a heat lamp produces GAMMA RADIATION. false
the color of visible light that has the longest wavelength is RED true
the brightness of light depends on the COLOR of the light wave false
LOOK AT PROBLEMS ON CHAPTER 4 TEST
who is given credit for creation of the periodic table? mendeleev
how did he organize the periodic table? increase across. decrease going down
state the definition of atomic mass. the number of protons and neutrons in an atom
what unit is used when measuring atomic mass? amu's
does the atomic number increase or decrease as you move from left to right? how much does it change from one element to the next? increase by 1 as you go left to right
the vertical columns on the periodic table are called? groups
the horizontal rows are called what? periods
What states of matter are represented by the metals at room temperature solid and liquid
There are two groups on the Periodic Table that are considered the most reactive, what are they? alkali metals and halogens
discuss what the octet rule states. the outer shell is completely full
PERIODIC TABLE DISTINCTION CHART
which is true of metals shiny
what element do all living creatures contain? carbon
Atomic mass______________ as it goes across period increases
electronegativity ____________ as it goes down a group decreases
ionization energy __________ as it goes across a period increases
which metal has the highest ionization energy? lithium
Which group on the Periodic table represents all three states of matter at room temperature? halogens
which metal is a liquid at room temperature? mercury
which element has the highest electronegativity? fluorine
every element in the carbon family has how many valence electrons? 4
alkali metals must be stored under oil because of their extreme reactivity
which of the following metals is not an alkali metal iron
the alkaline earth metals are not as reactive as the alkali earth metals because they have higher ionization energies
magnesium is produced commercially by recovering it from sea water and mineral deposits
the most reactive metals are found where on the periodic table s-block
a compound commonly used to treat manic depression is lithium carbonate
the alkali metals are malleable, ductile, and good conductors of electricity
all isotopes of the actinides series are radioactive
the lanthanides are all very similar to one another because they all lose 3 electrons to form 3+ ions.
how are the artificial actinide elements produced nuclear bombardment reactions
oxygen combines with most elements to form compounds called oxides
the largest use of sulfur is in the production of sulfuric acid
all of the halogens exist in elemental form as _____ molecules diatomic
the most reactive element is fluorine
natural gas wells are a major source of todays helium
the most industrially useful halogen which is useful to disinfect drinking water is chlorine
there are no known compounds of helium, neon, and argon
the formation of nitrogen compounds from nitrogen gas is called nitrogen fixation
hydrogen has how many valence electrons 1
hydrogen exists as a _______ under normal conditions gas
most of the earths hydrogen is combined with oxygen as water
organic compounds frequently contain hydrogen bonded with carbon
which element is the most abundant in the universe hydrogen
which one is not a use of a hydrogen containing compound petroleum
how did the alkaline earth metals get their name from the middle ages
transition metals play an important role in living organisms true
copper is a hard silvery metal whose ions exhibit a variety of different colors. false
hemoglobin contains the element cobalt. false
a piece of 18 karat jewelry contains 100 percent gold false
cobalt is found in vitamin B12 true
aluminum does not corrode in air because a layer of aluminum oxide form on its surface true
more than 40 billion kilograms of hydrogen sulfide is produced annually and used in almost all manufacturing processes false
carbon monoxide is produced when hydrocarbons are burned in a plentiful supply of oxygen false
boron is a major component of all fossil fuels false
hydrocarbons are the structural materials of most rocks false
germanium is the major component of glass false
nitrogen makes up approximately 80 percent of the earths atmosphere true
chromium is used to plate automobile grills true
zirconium is alloyed with small amounts of carbon to form steel true
gold is a soft metal used in jewelry true
an ionic bond is an attraction between oppositely charged ions
anions have a ______ charge negative
an atom becomes an ion by losing or gaining electrons
the ______ rule states that atoms tend to gain, lose or share electrons in order to acquire a full set of valence electrons octet
when sodium and chlorine form an ionic bond both ions acquire the electron configuration of a noble gas
the atoms that make up ________ ions are bonded together by covalent bonds polyatomic
calcium becomes a monatomic cation by GAINING two electrons false losing
a cation has a POSITIVE charge true
a binary ionic compound contains only ONE kind of cation and one kind of anion true
MONATOMIC ions consist of more than one atom false polyatomic
Created by: EmmaRoseDavis
 

 



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