Part 7

Question 1

What are atoms with six or seven valence electron shells called?

Answer 1

electronegative

Question 2

What are atoms with one or two valence electron shells called?

Answer 2

electropositive

Question 3

As the hydrogen ion concentration decreases, the solution becomes more ________.

Answer 3

alkaline / basic

Question 4

As the hydrogen ion concentration increases, the solution becomes more _______.

Answer 4

acidic

Question 5

A pH of 7 is considered _______, which is neither acidic nor basic, because the number of hydrogen ions equals the number of base ions in the solution.

Answer 5

neutral

Question 6

What is added to increase the rate of a reaction?
Is the ______ consumed in the reaction?
Can the ______ be reused after the reaction has been completed?

Answer 6

catalyst
catalyst is not consumed in the reaction
catalyst can be reused when the reaction is completed

Question 7

What is an enzyme that has lost its shape as a result of damage is said to be _______.

Answer 7

denatured

Question 8

What does it mean when certain chemicals have both polar and nonpolar parts?

Answer 8

amphipathic