Part 5

Question 1

The measure of a solution’s hydrogen ion concentration is ______.

Answer 1

pH

Question 2

A substance that releases hydrogen ions when in solution is a(n) ______.

Answer 2

acid

Question 3

A substance capable of binding with hydrogen ions is a(n) ______.

Answer 3

base

Question 4

What chemical substance or system minimizes large changes in pH by releasing or binding hydrogens?

Answer 4

buffer

Question 5

What is the process in which molecules are formed, changed, or broken down?

Answer 5

chemical reaction

Question 6

What is a protein that acts as a biological catalyst to speed up a chemical reaction?

Answer 6

enzyme

Question 7

What type of chemical bond occurs when a pair of electrons is unequally shared between two atoms?

Answer 7

polar covalent bond

Question 8

What type of chemical bond occurs when two atoms equally share electrons?

Answer 8

nonpolar covalent bond

Question 9

What type of chemical bond is formed by the transfer of one or more electrons?

Answer 9

ionic bond

Question 10

What is an ion with a positive charge called?

Is it an electron donor or acceptor?

Answer 10

cation

electron donor

Question 11

What type of chemical bond occurs between metals and nonmetals?

Answer 11

ionic bond