Inorganic Chemistry

Question 1

Elements

Answer 1

Cannot be broken down any further

Question 2

Four most common elements in the human body

Answer 2

Carbon, hydrogen, nitrogen, oxygen

Question 3

% of CHON

Answer 3

97%

Question 4

Proton

Answer 4

Positive charge (nucleus)

Question 5

Neutrons

Answer 5

No charge (nucleus)

Question 6

Electrons

Answer 6

Negative charge (cloud)

Question 7

Atomic number

Answer 7

Number of protons

Question 8

Orbitals

Answer 8

What electron shells are made of, can hold two electrons

Question 9

Significance of electron shells

Answer 9

Outer shell determines chemical properties

Question 10

Molecule

Answer 10

two or more atoms held together by sharing electrons

Question 11

Molecules composed of more than one element can also be called

Answer 11

Compounds

Question 12

cations

Answer 12

Positive charge

Question 13

anions

Answer 13

Negative charge

Question 14

covalent bond

Answer 14

Sharing electrons (pairs)

Question 15

double covalent bond

Answer 15

Two pairs shared

Question 16

non-polar covalent bonds

Answer 16

Equally shared charge

Question 17

polar covalent bond

Answer 17

Net charge is 0, part charge is different

Question 18

hydrogen bond

Answer 18

When polar covalent bonds exist, hydrogen can make “bonds”

Question 19

Water makes up ___ of the body

Answer 19

2/3

Question 20

Water is held together by

Answer 20

Polar covalent molecules

Question 21

adhesion

Answer 21

Water is able to stick to other polar substances

Question 22

Cohesion

Answer 22

allows water molecules to stick to each other

Question 23

All of the thousands of chemical reactions taking place in our bodies require

Answer 23

water

Question 24

solvent

Answer 24

a dissolving agent and is the liquid portion of a solution

Question 25

solutes

Answer 25

The molecules that dissolve in the solvent

Question 26

In pure water, the concentration of H+ is always equal to the concentration of OH-

Answer 26

Mastery

Question 27

hydrogen ion

Answer 27

(H+)

Question 28

hydroxide ion

Answer 28

(OH-)

Question 29

acid is any substance that when added to an aqueous solution ____ the [H+] of the solution

Answer 29

increases

Question 30

base is any substance that when added to an aqueous solution ____ the [H+] of the solution

Answer 30

decreases

Question 31

pH

Answer 31

negative logarithm of the hydrogen ion concentration

Question 32

Normal body pH

Answer 32

7.4