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Accouting > Semester Questions > Flashcards

Semester Questions Flashcards

1
Q

What is something that helps explain why things happen?

A

Scientific Theories and Testable Hypothesis

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2
Q

Potassim bromate acts by oxidizing the
gluten and cross-linking tyrosine (an amino acid)
units of the protein molecule, enabling the dough
to retain gas better.
This is best classified as what?

A

A theory

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3
Q

A scientist wonders if sodium bromate
might cross-link separate tyrosine
molecules, forming a dimer
This is best classified as

A

A hypothesis

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4
Q

Dough to which potassium bromate
has been added rises better, producing a
lighter, larger loaf
This is best classified as

A

An observation

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5
Q

What is a scientific model?

A

a scientific theory

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6
Q

Law of the conservation of Mass

A

matter is neither created nor destroyed during a chemical change (and hence its mass remains constant)

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7
Q

Law of Definite Proportions

A

A compound always contains the same elements in certain definite proportions by mass and in no other (also know as the law of constant composition)

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8
Q

Law of Multiple Proportions

A

Elements might combine in more than one set of proportions to form different compounds. Proportions for different compounds of the same elements are related through simple whole number ratios.

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9
Q

How would you write a nuclear symbol for an atom/ion containing 27 protons, 33 neutrons, and 25 electrongs

A

60 on top with 27 on bottom and a plus two charge to the right

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10
Q

What is electricity? How is it explained on a molecular level?

A

The flow of a charge / either with electrons / or charged atoms

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11
Q

What did JJ Thomson’s Cathode ray tube experiment discover?

A

Charge of the electron

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12
Q

The point of Robert Millikan’s oil drop experiment?

A

Learned how to measure the charge and mass of an electron

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13
Q

The point of Eugen Goldsteins discharge tube experiment

A

positive ions have variable mass and are much heavier than the electron

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14
Q

Rutherfords gold foil experiment point

A

The majority of the atom is empty space and a small amount of of the mass is in the nucleus

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15
Q

what is a Covalent bond?

A

A bond that involves the sharing of electron pairs between atoms

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16
Q

What is a hydrogen bond?

A

A bond between a negative side of an atom and the positive part of a Hydrogen

17
Q

What does pH mean?

A

pH is the power or amount of hydrogen

18
Q

What is the equation of pH

A

pH=-log (+H)

19
Q

What does a pH of 7 mean?

A

It means its neutral

20
Q

What happens if a pH is below 7?

A

its an acid high is a base

21
Q

What are all the strong acids?

A 
HI	
HBr	
HClO4	
HCl	
HClO3                 
H2SO4
HNO3
22
Q

What are all the strong Bases?

A 
NaOH	
KOH	K
LiOH
RbOH
CsOH
Ca(OH)2
Ba(OH)2
Sr(OH)2

Accouting (12 decks)

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