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FREE AND STUDY GAMES ABOUT MASTERING BIO CH. 3
EXAM QUESTIONS
Qs and Ans Expert- Explanation
This Exam contains:
-Guarantee passing score -15 Questions and Answers -format set of multiple-choice -Expert- Explanation
Question 1: What is an "acid"?
Answer:
Compound that contributes H+ or removes OH- from an aqueous solution.
Question 2: Define "solvent"
Answer:
The dissolving agent. For life, usually water.
Question 3: What is "heat"?
Answer:
The total amount of energy associated with the movement of atoms and molecules in a body of matter.
Question 4: Nonpolar covalent bonds
Answer:
Electrons are shared equally
Question 5: What is a "base"?
Answer:
Compound that removes H+ or contributes OH- to an aqueous solution.
Question 6: Polar covalent bonds
Answer:
More electronegative atom has stronger hold on electron creating a partial charge
Question 7: Hydrogen bonds
Answer:
Hydrogen partially bonds to highly negative molecues, usually O, N, or F
Question 8: What is "Brownian Motion"
Answer:
Random movement of molecules
Question 9: What is "temperature"?
Answer:
Measures the intensity of heat (average speed of all the molecules in a body)
Question 10: What is the pH of normal human blood?
Answer:
7.4, slightly alkaline.
Question 11: What is "pH"?
Answer:
Potential of Hydrogen
Question 12: Define "solute"
Answer:
The substance that is dissolved.
Question 13: What is the pH scale?
Answer:
0-14 (acid -> alkaline), 7 is neutral.
Question 14: Ionic bonds
Answer:
Strong atom strips away electron, creating cations and anions Question 15: Emergent properties of water:
Answer:
Cohesion & Adhesion, Moderation of temperature, Expansion upon freezing, Versatility as a solvent
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