Chapter 2

Question 1

Force of attraction between two Atoms that share a pair of electrons

Answer 1

Covalent bond

Question 2

Particles located in the nucleus that have a positive charge

Answer 2

Protons

Question 3

Particles located in the nucleus that do not have a charge

Answer 3

Neutrons

Question 4

Particles located around the nucleus that has a negative charge

Answer 4

Electrons

Question 5

Attraction between molecules of different substances

Answer 5

Adhesion

Question 6

Attractions between molecules of the same substance

Answer 6

Cohesion

Question 7

Week chemical bond between hydrogen Atoms in one molecule and negatively charged region of another molecule

Answer 7

Hydrogen bond

Question 8

When molecules have an unequal distribution of charge

Answer 8

Polar

Question 9

Substance that speeds up the rate of a chemical reaction

Answer 9

Catalyst

Question 10

What is an example of a polar molecule

Answer 10

Water

Question 11

Water fearing

Answer 11

Hydrophobic

Question 12

Water loving

Answer 12

Hydrophilic

Question 13

Chemical bonds are broken, Atoms are rearranged, and new bonds are formed

Answer 13

Chemical reactions

Question 14

The amount of energy needed to start a chemical reaction is the reactions ……

Answer 14

Activation energy

Question 15

An example of biological catalyst

Answer 15

Enzymes

Question 16

What are examples of carbohydrates

Answer 16

Sugars, starch, cellulose

Question 17

What elements are carbohydrates made of

Answer 17

C.H.O

Question 18

What is the monomer of each carbohydrates

Answer 18

Monosaccharides

Question 19

Are carbohydrates soluble in water

Answer 19

Yes

Question 20

What are the functions of carbohydrates

Answer 20

Store and release energy

Question 21

What are examples of proteins

Answer 21

Amino acid, enzymes

Question 22

What are the elements of protein composed of

Answer 22

Carbon, hydrogen, oxygen, nitrogen

Question 23

What is the monomer of proteins

Answer 23

Amino acid

Question 24

Are proteins soluble in water

Answer 24

Yes

Question 25

What are the functions of proteins

Answer 25

Muscle contraction, transportation of substances, immunity, biological catalyst

Question 26

What are examples of lipid

Answer 26

Fats, oil’s, steroids, wax, triglycerides

Question 27

What elements are lipid composed of

Answer 27

Carbon, hydrogen, oxygen

Question 28

Are lipids soluble in water

Answer 28

No

Question 29

What are the functions of lipids

Answer 29

Long-term energy storage and insulation

Question 30

What are examples of nucleic acids

Answer 30

DNA, RNA

Question 31

What elements are nucleic acid’s composed of

Answer 31

Carbon, hydrogen, oxygen, potassium, nitrogen

Question 32

What is the monomer of nucleic acids

Answer 32

Nucleotides

Question 33

What are the functions of nucleic acids

Answer 33

Store genetic info in our cells

Question 34

The name of carbohydrates end in

Answer 34

-ose

Question 35

The name of enzymes end in

Answer 35

-ase

Question 36

Water molecules are polar with the

Answer 36

Oxygen side being slightly negative And the hydrogen side being slightly

Question 37

Substances that enter a chemical reaction are called

Answer 37

Reactants

Question 38

New substances produced by chemical reactions are called

Answer 38

Products

Question 39

In assets, the hydronium ion concentration is greater than or less than the hydroxide ion concentration

Answer 39

Greater than

Question 40

Chemicals that prevent a change in pH when an acid or base is added to a solution

Answer 40

Buffer

Question 41

Is water a good thermal buffer

Answer 41

Yes

Question 42

Why is water a good thermal buffer

Answer 42

Waters high specific heat

Question 43

Give an example of an enzyme name

Answer 43

Lactase