Chemistry and Ecology Quiz

Question 1

What is considered the minimum oxygen concentration needed to facilitate large fish in a body of water?

Accepted Answer

5 ppm

Question 2

Which of the following is not a heavy metal?

Accepted Answer

Carbon

Question 3

What elements are found in carbohydrates and lipids

Accepted Answer

C, H, O

Question 4

When an acid is added to water it gives off

Accepted Answer

hydrogen ions

Question 5

You have a substance with a pH of 10, you add a second substance and the pH change to 8, what was the second substance?

Accepted Answer

acid

Question 6

When mixing and acid and a base, what substance is always produced?

Accepted Answer

water

Question 7

DNA is made up of what elements

Accepted Answer

C, H, O, N, , P

Question 8

Any substance that causes a change in the environment that is harmful to living thing is called...

Accepted Answer

pollution

Question 9

What is considered the ideal pH to facilitate the largest diversity of organisms in a body of water?

Accepted Answer

7

Question 10

What is the most abundant element in the universe?

Accepted Answer

H

Question 11

What is a neutral pH?

Accepted Answer

7

Question 12

Nutrients that you need only in small amounts are called _____________.

Accepted Answer

micronutrients

Question 13

A phosphorus concentration below ________ will generally ensure no algal blooms.

Accepted Answer

0.05 ppm

Question 14

Nutrients that you need a large amount of are known as _____________

Accepted Answer

macronutrients

Questions 14