FREE AND STUDY GAMES ABOUT MASTERING BIO CH. 3

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FREE AND STUDY GAMES ABOUT MASTERING BIO CH. 3

EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -15 Questions and Answers -format set of multiple-choice -Expert-Verified 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