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[Meer zien]CEM 141 AHIP EXAM PACKAGE DEAL!!
[Meer zien]Atoms - Matter is made up of 
Atom - The the smallest distinguishable part of an element 
Theories - Can change overtime according to the evidence available 
Electrostatic forces - ALL atoms/molecules attract to one another due to 
Attractions - ________ lower potential energy of a system 
Repulsion...
Voorbeeld 2 van de 8 pagina's
In winkelwagenAtoms - Matter is made up of 
Atom - The the smallest distinguishable part of an element 
Theories - Can change overtime according to the evidence available 
Electrostatic forces - ALL atoms/molecules attract to one another due to 
Attractions - ________ lower potential energy of a system 
Repulsion...
Stable systems form when? - The attractive forces and the repulsive forces are equal. 
Claim, evidence and reasoning for the existence of negatively charged particles in an atom. - 
Claim: Electron's are negatively charged particles of an atom. 
Evidence: JJ's cathode ray. Electron's were ejected...
Voorbeeld 1 van de 4 pagina's
In winkelwagenStable systems form when? - The attractive forces and the repulsive forces are equal. 
Claim, evidence and reasoning for the existence of negatively charged particles in an atom. - 
Claim: Electron's are negatively charged particles of an atom. 
Evidence: JJ's cathode ray. Electron's were ejected...
Ionization Energy - energy required to remove an electron from an atom in the gas phase 
Left Side Electrons - have weaker attractions to remove electrons 
*easier to remove electrons from the left side of the table than the right side* 
Does it take MORE or LESS energy to remove an electron from Li...
Voorbeeld 2 van de 5 pagina's
In winkelwagenIonization Energy - energy required to remove an electron from an atom in the gas phase 
Left Side Electrons - have weaker attractions to remove electrons 
*easier to remove electrons from the left side of the table than the right side* 
Does it take MORE or LESS energy to remove an electron from Li...
mole - 6.022 x 10^23 things 
number of particles that allows us to convert from the molecular to the macroscopic level 
limiting reactant/reagent - amount of one of the reactants which limits how much product can be 
formed. smallest amount. 
percent yield - actual/theoretical x 100 
electromagnetic...
Voorbeeld 2 van de 9 pagina's
In winkelwagenmole - 6.022 x 10^23 things 
number of particles that allows us to convert from the molecular to the macroscopic level 
limiting reactant/reagent - amount of one of the reactants which limits how much product can be 
formed. smallest amount. 
percent yield - actual/theoretical x 100 
electromagnetic...
change of state from solid -> liquid -> gas ________ energy - requires 
energy needed to phase change from solid --> liquid --> gas comes from: - the surroundings 
when phases change from solid --> liquid --> gas, interactions are _______ between molecules - 
overcome 
change of st...
Voorbeeld 3 van de 20 pagina's
In winkelwagenchange of state from solid -> liquid -> gas ________ energy - requires 
energy needed to phase change from solid --> liquid --> gas comes from: - the surroundings 
when phases change from solid --> liquid --> gas, interactions are _______ between molecules - 
overcome 
change of st...
Which has a larger atomic radius? Mg or Ar? Why? 
A. Mg, because it is a metal. 
B. Mg, because its valence electrons are not as strongly attracted towards the nucleus as those in Ar. 
C. Ar, because it is a heavier element. 
D. Ar, because it has more electrons and they repel each other. - Answer B...
Voorbeeld 2 van de 9 pagina's
In winkelwagenWhich has a larger atomic radius? Mg or Ar? Why? 
A. Mg, because it is a metal. 
B. Mg, because its valence electrons are not as strongly attracted towards the nucleus as those in Ar. 
C. Ar, because it is a heavier element. 
D. Ar, because it has more electrons and they repel each other. - Answer B...
If one carbon wants 4 bonds, how many bonding orbitals can it have? 
A. 1 
B. 2 
C. 3 
D. 4 - AnswerD 
In graphite how many carbons is each carbon attached to? 
A. 2 
B. 3 
C. 4 
D. 5 - AnswerB 
How many orbitals should "mix" to form 3 bonds? 
A. 2 
B. 3 
C. 4 
D. 5 - AnswerB 
How many different c...
Voorbeeld 4 van de 47 pagina's
In winkelwagenIf one carbon wants 4 bonds, how many bonding orbitals can it have? 
A. 1 
B. 2 
C. 3 
D. 4 - AnswerD 
In graphite how many carbons is each carbon attached to? 
A. 2 
B. 3 
C. 4 
D. 5 - AnswerB 
How many orbitals should "mix" to form 3 bonds? 
A. 2 
B. 3 
C. 4 
D. 5 - AnswerB 
How many different c...
Which reaction requires the most energy? 
A. N(g) → N+(g) + e - 
B. N+(g) → N2+(g) + e - 
C. F(g) → F+(g) + e - 
D. F+(g) → F2+(g) + e - - D. F+(g) → F2+(g) + e - 
Fluorine has a higher effective nuclear charge than Nitrogen - so it is harder to remove an electron 
(takes more energy becau...
Voorbeeld 2 van de 9 pagina's
In winkelwagenWhich reaction requires the most energy? 
A. N(g) → N+(g) + e - 
B. N+(g) → N2+(g) + e - 
C. F(g) → F+(g) + e - 
D. F+(g) → F2+(g) + e - - D. F+(g) → F2+(g) + e - 
Fluorine has a higher effective nuclear charge than Nitrogen - so it is harder to remove an electron 
(takes more energy becau...
Why are alpha particles deflected by the nucleus? - Because both the alpha particles and the 
nucleus are positively charged and so the alpha particle is repelled. 
Is this statement (Dalton's Theory) true or false and why? 
"All atoms of an element are identical and have the same mass and propert...
Voorbeeld 2 van de 6 pagina's
In winkelwagenWhy are alpha particles deflected by the nucleus? - Because both the alpha particles and the 
nucleus are positively charged and so the alpha particle is repelled. 
Is this statement (Dalton's Theory) true or false and why? 
"All atoms of an element are identical and have the same mass and propert...
Yes because it can be tested and answered though observations and experiments - Consider the 
question: Is there an attractive force between a pencil and the earth? 
Is this a scientific question? [Yes or No] 
Because 
III. It can be tested and answered through observations and experiments 
IV. The ...
Voorbeeld 2 van de 11 pagina's
In winkelwagenYes because it can be tested and answered though observations and experiments - Consider the 
question: Is there an attractive force between a pencil and the earth? 
Is this a scientific question? [Yes or No] 
Because 
III. It can be tested and answered through observations and experiments 
IV. The ...
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