Chapter 6 Quiz study guide

Question 1

How mamy different kinds of Atoms does an element contain?

Answer 1

One

Question 2

A_____ is a heterogenous mixture in which the particles do not settle.

Answer 2

Colloid

Question 3

Acid solutions are produced by the release of ____ ions.

Answer 3

hydrogen

Question 4

Atoms of the same element that have different numbers of neutrons are called ____.

Answer 4

Isotopes

Question 5

How are atoms in molecules held together?

Answer 5

Covalent bonds

Question 6

How do buffers help maintain homeostasis?

Answer 6

neutralize acids and bases

Question 7

How do solutes and solvents interact?

Answer 7

solutes dissolve in solvents

Question 8

How many electrons does a carbon atom have in its outer energy level?

Answer 8

4

Question 9

Molecules made from units of identical compounds linked by covalent bonds are called ____.

Answer 9

nucleic acids

Question 10

The minimum amount of energy needed for a chemical reaction is called ____.

Answer 10

activation energy

Question 11

What are saturated fats?

Answer 11

lipids with single bonds between carbon atoms.

Question 12

What is the function of the enzyme-substrate complex?

Answer 12

break and form chemical bonds

Question 13

What kind of chemical reaction absrobs energy?

Answer 13

Endothermic

Question 14

What principle can be applied to all chemical reactions?

Answer 14

Conservation of mass

Question 15

Why do acidic things have a higher concentration of hydrogen than bases?

Answer 15

Because lower than 7 ph value is acidic, and acidic things have lots of hydrogen, because its what makes them more acidic.

Question 16

Define four macromolecules.

Answer 16

Carbohydrates, lipids, proteins, and nucleic acids.

Question 17

All of the chemical reactions in a cell are referred to as the cell’s_______.

Answer 17

metabolism