1. Which molecule shown above would have a positive charge in a cell?
2. A molecule of carbon dioxide (CO2) is formed when one atom of carbon (atomic number 6) is covalently bonded with two atoms of oxygen (atomic number 8). What is the total number of electrons that must be shared between the carbon atom and the oxygen atoms in order to complete the outer electron shell of all three atoms?
3. The molecule shown here could be described in chemical symbols as We also discuss several other topics like virginia tech onedrive
4. Trace elements are required by organisms in ______________ quantities.
A) Extremely Large
B) Only Minute
D) Trace elements are deadly in any quantities
5. Many _____________ cells use exocytosis to export their products
Don't forget about the age old question of “Who is our target market?
6. The atomic mass is the sum of protons and __________.
B) Atomic number
D) Bonds made with other atoms
7. What is the outermost electron shell called?
B) Empty Shell
C) First Shell
D) Valence Shell
8. What type of bond results from a hydrogen atom in a polar compound and an electromagnetic atom in another polar compound?
A) Covalent Bond
B) Ionic Bond
C) Hydrogen Bond
D) Van der Waals Force
A) Nonpolar Covalent Bond
B) Ionic Bond
C) Hydrogen Bond
D) Polar Covalent Bond
10. In water molecules, what charge do hydrogen molecules have due to the oxygen having a much higher electronegativity than hydrogen?
D) No Charge
11. The greater specific heat of a substance, the ________ it resists changing temperature when it absorbs or releases heat. This can be traced to ____________ bonding.
A) Less, Hydrogen
B) Greater, Hydrogen
C) Less, Covalent
D) Greater, Covalent
12. The measure of how difficult it is to stretch or break the surface of a liquid is referred to as A) Adhesion
C) The Ability to Moderate Temperature
D) Surface Tension
13. Which of the following is NOT one of the four emergent properties of water that contribute to Earth’s suitability for life?
A) Ability to Moderate Temperature
B) Cohesion and Adhesion
C) Shrinking upon Freezing If you want to learn more check out education in colonial america reflected a ________.
D) Versatility as a Solvent for Other Polar and Ionic Compounds
14. If 2 M of glucose (side A) is separated by a selective permeable membrane from a solution of 0.4 M fructose and 1.4 M sucrose (side B). The membrane is not permeable to sugar molecules, so which of the following statements would be correct?
A) Side A is hypotonic relative to side B
B) Side B is hypotonic relative to side A
C) The net movement of water will be from side B to side A
D) The net movement of water will be from side A to side B
15. Water’s high specific heat is mainly a consequence of the
A) Small size of the water molecule We also discuss several other topics like international trade study guide
B) Absorption and release of heat when hydrogen bonds break and form
C) High specific heat of oxygen and hydrogen atoms
D) Inability of water to dissipate heat into dry air
16. Citric Acid makes lemons taste sour. Which of the following is a functional group that would cause a molecule such as citric acid to be acidic?
17. An amino group and a carboxyl group bonded to a carbon skeleton will ______________ when it is placed in water.
A) Function as a base and an acid
B) Function as a base due to the amino group
C) Function as an acid because of the carboxyl group
D) Function as neither an acid or a base because they would both cancel the effects of one another
18. A solute is:
A) A liquid that is completely homogenous mixture of substances
B) Substance dissolved in a solution
C) A substance that loves water
D) A substance that does not like water
19. True or False: Water freezes from the bottom up.
20. SHORT ANSWER: Chapter 2: Energy is the capacity to cause change by doing work. Potential energy is energy matter has because of its location or structure. The electron shell of an electron explains the amount of potential energy each electron has. Explain how much potential energy an electron has the further it gets from the nucleus, as well as define the flow of energy to move an electron closer and farther away from the nucleus.
21. SHORT ANSWER: Chapter 3: Explain how water’s ability to moderate temperature is necessary to permit marine life.
Total Correct: _________________ out of 21. Percent ________________
This study guide is specifically covering Chapters 2-4, and reflects questions from the readings, clicker quizzes, and homework. The concepts covered have the potential to be on the exam, and should be covered in more depth than just this study guide, but this is a great way to check your understandings of general concepts that will be tested. Good luck and Roll Tide!
20. USE THE FOLLOWING INFORMATION TO ANSWER THE QUESTION:
Potential Energy: energy matter has because of its location or structure
a. An electron’s state of potential energy is called energy level (or electron shell)
b. The more distant an electron is from the nucleus = greater potential energy
i. Energy is required to move an electron away from the nucleus
1. ie: absorbing light energy in photosynthesis
ii. Energy is released when moving to a lower shell (closer to nucleus)
1. ie: releasing energy usually in the form of heat
21. USE THE FOLLOWING INFORMATION TO ANSWER THE QUESTION:
Water is effective as a heat bank because it can absorb or release a relatively large
amount of heat with only a slight change in its own temperature
Temperature and Heat
∙ Specific heat of a substance is the amount of heat that must be absorbed or lost
for 1g of that substance to change its temperature by 1°C.
Calorie is the amount of heat it takes to raise the temperature
of 1g of water by 1°C.
o The greater the specific heat of a substance, the greater it resists
changing temperature when it absorbs or releases heat.
Compared to other substances, water has an unusually high
o The high specific heat of water minimizes temperature fluctuations to
within limits that permit life, and because organisms are made
primarily of water, they are better able to resist changes in their own