AP Bio Unit 1 Test- Practice Test Part 1
This flashcard set focuses on identifying and comparing types of chemical bonds, such as hydrogen, ionic, and covalent bonds. It aids in understanding bond strength and electron sharing in molecular structures.
which of the following is most easily broken?
a. hydrogen bond
b. triple covalent bond
c. single covalent bond
d. ionic bond
hydrogen bond
Key Terms
which of the following is most easily broken?
a. hydrogen bond
b. triple covalent bond
c. single covalent bond
d. ionic bond
hydrogen bond
what type of bond is formed when atoms share electrons?
a. ionic
b. covalent
c. hydrogen
covalent
water molecules are
a. polar
b. hydrogen bonded to one another
c. cohesive
d. all of the above
all of the above
which of the following elements is not one of the four most common in living organisms
a. C
b. N
c. O
d. Cl
Cl
water's property of surface tension is due to
a. cohesion
b. adhesion
c. high specific heat
d. ionic bonding
cohesion
ionic and covalent bonds attach ___ while hydrogen bonds attach ___
a. molecules to other molecules, atoms together in molecules
b. water molecules to surfaces, water molecules to each other
c. atoms together in molecules, molecules to other molecules
d. water molecules to each other, water molecules to surfaces
atoms together in molecules, molecules to other molecules
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| Term | Definition |
|---|---|
which of the following is most easily broken? | hydrogen bond |
what type of bond is formed when atoms share electrons? | covalent |
water molecules are | all of the above |
which of the following elements is not one of the four most common in living organisms | Cl |
water's property of surface tension is due to | cohesion |
ionic and covalent bonds attach ___ while hydrogen bonds attach ___ | atoms together in molecules, molecules to other molecules |
what a solution becomes increasingly basic | the pH goes above 7 |
The number of bonds that an atom will make with other atoms is related to | the number of electrons in the outermost energy level |
When HCl is dissolved in water, it makes H+ ions and Cl- ions. This causes _____. | the pH of water to go down |
Which of the following is not true about water? | It is a universal solvent. |
A solution of pH 6 contains ____ than the same amount of solution of pH 8. | 100X more H+ |
A can of soda consists mostly of sugar dissolved in water, with some carbon dioxide gas | Solvent...solute...acidic |
A buffer maintains a stable pH by: | Donates H+ when conditions become too basic and accepts H+ ions when conditions |
The emission of _____ and _____ are primarily responsible for acid precipitation. | Nitrogen oxides ... sulfur oxides |
Hydrogen bonding ___________. | all of the above |
Aquatic living things are able to survive the winter thanks to which property of water? | It is less dense as a solid than as a liquid. |
Which of the following is best described as hydrophobic? | oil |
Water would still freeze at 0°C and boil at 100°C without hydrogen bonding. | False |
A solution with a pH of 5 has 10 times more hydrogen ions (H+) than a solution | True |
Any pH below _____ is acidic. | seven |
Which property of water is responsible for facilitating the flow of water upwards in a tree? | It is cohesive and adhesive. |
Molecules that attract water are described as hydrophilic. | True |
Deoxyribose is the sugar found in _____. | DNA |
Carbohydrates are commonly described as _____. | sugars |
Which best describes a saturated fat? | solid at room temperature |