Chap 2: Importance of chemistry in A&P

Question 1

Human body, food , medications are all composed of what?

Answer 1

chemical reactions

Question 2

all antaomical structure are what ?

Answer 2

chemicals

Question 3

all physiological processes are based on what?

Answer 3

chemical reactions

Question 4

anything that takes up space that has mass is considered…..

Answer 4

matter

Question 5

matter is composed of what kind of elements?

Answer 5

solids, liquids, and gases

Question 6

what is mass?

Answer 6

amount of matter present

Question 7

heaviness due to gravitational pull on mass

Answer 7

weight

Question 8

chemistry studies what?

Answer 8

composition, porperties, interaction of matter

Question 9

biochemisty studies what?

Answer 9

biological chemistry, which studies physiological process and disease

Question 10

Elements are the simplist type of….

Answer 10

matter with certain chemical properties

Question 11

how many naturally occuring elements are there?

Answer 11

92

Question 12

chemical combinataion of diff elements is called a ?

Answer 12

compound

Question 13

smallest particles of an elemenet that have properties of that element is called ?

Answer 13

atoms

Question 14

different elements are required by the body by different

Answer 14

amounts

Question 15

whats required by the body in different amounts?

Answer 15

bulk elements ( C, O, H, N, S, P)

Question 16

whats required by the body in small amounts?

Answer 16

trace elements

Question 17

what’s required by the body in very minute amounts?

Answer 17

ultratrace elements

Question 18

atoms are ….

Answer 18

composed of subatomic particles

Question 19

protons are…

Answer 19

a large particle that carries a positive charge

Question 20

neutrons are….

Answer 20

a large particle that carries no electrical charge

Question 21

electrons are

Answer 21

small particles that carry a single negative charge

Question 22

whats in the central nucleus of an atom?

Answer 22

proton and neutron

Question 23

electron is in constant motion around the…

Answer 23

nucleus of the atom

Question 24

the # of protons equals the number of

Answer 24

electrons in an atom

Question 25

what does the atomic number equal?

Answer 25

equals to the number of protons

Question 26

how do you find the mass number?

Answer 26

number of protons plus the number of neutrons in an atom

Question 27

why don’t the elections contribute to the mass of the atom?

Answer 27

they’re very light

Question 28

whats an isotope?

Answer 28

all atoms of a certain element have the same atomic number

Question 29

they have the same atomic number but don’t have the same what?

Answer 29

atomic mass

Question 30

which element often forms isotopes?

Answer 30

oxygen (O^16 the numbers represent different mass number)

Question 31

what are radioactive isotopes?

Answer 31

unstable, release energy with atomic fragments until stability is gained

Question 32

why is the outer shell of an elctron important

Answer 32

its important for chemical bonding

Question 33

what’s an ion?

Answer 33

something that gains or loses electrons

Question 34

waht does the lines in h2 = M mean

Answer 34

sharing electrons

Question 35

a compound =

Answer 35

2 different type of elements working together

Question 36

why ionizing radiation called whatits called?

Answer 36

because its energy can remove electrons from atoms

Question 37

what does it result to?

Answer 37

the formation of ions

Question 38

what can free electrons do?

Answer 38

damage nearby atoms

Question 39

what does ionizing radiation sources include?

Answer 39

x rays

Question 40

Molecule is formed when?

Answer 40

a particle forms two or more 9