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CHEM-120:| CHEM 120 INTRO TO GENERAL, ORGANIC & BIOLOGICAL CHEMISTRY WITH LAB EXAM 1 CHAPTERS 1-4 KEY TERMS QUESTIONS WITH 100% CORRECT ANSWERS $11.00   Add to cart
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CHEM-120:| CHEM 120 INTRO TO GENERAL, ORGANIC & BIOLOGICAL CHEMISTRY WITH LAB EXAM 1 CHAPTERS 1-4 KEY TERMS QUESTIONS WITH 100% CORRECT ANSWERS
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CHEM-120:| CHEM 120 INTRO TO GENERAL, ORGANIC & BIOLOGICAL CHEMISTRY WITH LAB EXAM 1 CHAPTERS 1-4 KEY TERMS QUESTIONS WITH 100% CORRECT ANSWERS

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  • April 18, 2024
  • 88
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers

Subjects

  • chem 120
  • chem 120 chem 120 intro to general organic bi
  • chem 120 intro to general organic biological c

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76 Multiple choice questions
Definition
non-uniform mixture containing 2 or more phases with distinct boundaries between them
-can have one or more states of matter
ex. soda, granite, smoke, organ juice
Accuracy
Covalent Bond
Element
Heterogenous Mixture1 of 76
Definition
when matter undergoes a state, size, or appearance change, but its composition remains the
same
-can be reversed by a physical process
ex. grinding chalk into powder
amplitude
mixture
physical change
accuracy2 of 76 Definition
degr ee of certainty in a measur ement
Ex. 18,270 is more certain than 18,000
physical change
certainty
matter
transition met als3 of 76
Definition
the ratio of the density of a subs tance to the density of water, has no units
specific gravity
specific he at
accuracy
element4 of 76
Definition
conversion of a measur ement in one unit into another by the use of conversion factors
ex. given unit x conversion factor(s)= desir ed unit
frequency
uncertainty
wavelength
dimensional analysis5 of 76 Definition
energy associa ted with the motion of particl es (mor e hea t= faster motion )
-Joule (J)
-calorie ( cal)
isotopes
temper ature
cation
heat6 of 76
Definition
a set of 8 valence el ectrons. in the forma tion of either iconic bonds or covalent bonds, atoms
lose, gain, or shar e valence el ectrons to requir e an octet of 8.
atomic number
polyatomic ions
octet rule
perio dic table7 of 76
Definition
two or more subs tances which are phy sically (NO T chemical ly) combined
-properties of each of the original components can s till be obser ved, thus they can be phy sically
separated because there's no chemical bonds betw een the p articl es
ex. coffee, air, steel, trail mix
mixture
transition met als
pure substance
specific gravity8 of 76 Definition
a value is written with one non z ero digit to he left of the decimal point and all other digits to the
right (coefficient ). this number is multiplied by 10 raised to the appr opria te power (exponent ). Has
to be greater than 1 but less than 10
Ex. 3500--> 3.5 x 10^3
Measurement
Standar d Not ation
Frequency
Mixture9 of 76
Definition
matter is neither created nor destroyed in a chemical reaction or physical change
-rusting ir on
-burning wood
atomic number
chemic al symbol
law of conser vation of mass
atomic mass10 of 76
Definition
how close a measur ement is to the true value
-it is best to take mul tiple measur ements and average them , the accuracy is then b ased on the
average of the measur ements
accuracy
intensiv e phy sical propertie s
specific gravity
physical change11 of 76

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