Protons and ______ are located in the nucleus of an atom, with _______ orbiting the nucleus.
A. Neutrons, Protons
B. Electrons, Neutrons
C. Neutrons, Electrons
C
Electrons have a charge of?
A.+1
B. 0
C. -1
C
Neutrons have a mass of?
A. 1 gram
B. 1 dalton
C. ~0 grams
D. ~0 daltons
B
Electrons have a mass of?
A. 1 gram
B. 1 dalton
C. ~0 grams
D. ~0 daltons
D
Element Y has the atomic number?https://d1py7umku9kunm.cloudfront.net/assets/4072564/Sub-Atomic_Particle_image.jpg
6
Lithium has the atomic number 3. What is the valence of Li?
A. 0
B. 1
C. 2
D. 3
E. 4
B
Carbon has the atomic number 6. What is the valence of C? (Draw the structure)
A. 0
B. 1
C. 2
D. 3
E. 4
E
Oxygen has the atomic number 8. What is the valence of O?
2
Sodium has the atomic number 11. What is the valence of Na?
1
Phosphorous has the atomic number 15. What is the valence of P?
3
https://d1py7umku9kunm.cloudfront.net/assets/4091280/Electronegativity_Tabel.jpg
The C-C bond:
A. Ionic
B. Polar Covalent
C. Covalent
C
The molecular weight of water is:
H2O = (1 X 2) + 16 = 18 daltons
What is the molecular weight of CO2
A. 3
B. 22
C. 44
D. have no idea
C
The molecular weight of Sucrose is:
C12H22O11
A. 45
B. 182
C. 342
D. have no idea
C
The molecular weight of Insulin is:
C254H377N65O75S6
A. 2512
B. 5727
C. 7283
D. 9235
B
How many grams NaOH would you need to have 3.0 Moles?
117
How many grams of NaCl would you need to make 1 liter of a 1 molar solution?
56
How many grams of glucose (C6H12O6) would you need to make 1 liter of a 0.25 M glucose solution?
45
True or False. Water is less dense as a liquid than a solid.
False
True or False. Water will adhere to a non-polar surface.
False
True or False. Water is a good evaporative coolant because is has a high heat of vaporization.
True
Based on the dissociation pattern Calcium Bromide is considered a/an:
CaBr2 —–> Ca+ and 2Br-
A. Acid
B. Base
C. Salt
C
Based on the dissociation pattern Hydrogen Fluoride is considered a/an:
HF —–> H+ and F-
A. Acid
B. Base
C. Salt
A
Based on the dissociation pattern Cesium Hydroxide is considered a/an:
CsOH —–> Cs+ and OH-
A. Acid
B. Base
C. Salt
B
Beginning with a solution of pH 8 you decrease the [H+] by a factor of 1,000 what is the new pH of the solution?
A. 3
B. 5
C. 8.3
D. 11
D
Beginning with a solution of pH 7 you increase the [H+] by a factor of 100 what is the new pH of the solution?
A. 5
B. 6.8
C. 9
D. 11
A
Beginning with a solution of pOH 5 you increase the [OH-] by a factor of 1,000 what is the new pH of the solution?
12
Which of these formulas represents a carbohydrate?
A. C4H8O2
B. C6H12O2
C. C6H6O2
D. C3H6O3
E. more than one
F. none
D
Four monomers are joined to form a linear polymer (tetramer) how many bonds must be formed?
A. 1
B. 2
C. 3
D. 4
E. 5
F. 6
C
Two monosaccharides are joined to form a disaccharide, as a result:
A. 1 molecule of water is produced
B. 1 molecule of water is consumed
C. I don’t know how to answer this question
A
Four monomers are joined to form a polymer (tetramer), as a result:
A. 1 molecule of water is produced
B. 3 molecules of water are produced
C. 4 molecules of water are produced
D. 3 molecules of water are consumed
E. 4 molecules of water are consumed
B
You consume an octasaccharide and in your digestive system it is broken down into 8 glucose molecules, the result was:
A. 1 molecule of water is produced
B. 1 molecule of water is produced
C. 7 molecules of water are produced
D. 7 molecules of water are consumed
E. 8 molecules of water are consumed
E
A polysaccharide (carbohydrate) made from 5 glucose (C6H12O6) molecules joined together would have the molecular formula:
A. C6H12O6
B. C15H30O15
C. C30H60O30
D. C30H52O26
E. C30H50O25
F. I have no idea
D
Which of these formulas most likely represents a lipid?
A. C6H12O6
B. C5H10O5
C. C18H32O16
D. C12H24O2
E. more than one
F. none
D
Amino Acids contain which of the following functional groups?
amino
carbonyl
carboxyl
hydroxyl
amino and carbonyl
amino and carboxyl
carboxyl and carbonyl
carboxyl and hydroxyl
amino, carboxyl, and hydroxyl
F
