Chap 2: Importance of chemistry in A&P Flashcards

1
Q

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

A

chemical reactions

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2
Q

all antaomical structure are what ?

A

chemicals

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3
Q

all physiological processes are based on what?

A

chemical reactions

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4
Q

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

A

matter

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5
Q

matter is composed of what kind of elements?

A

solids, liquids, and gases

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6
Q

what is mass?

A

amount of matter present

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7
Q

heaviness due to gravitational pull on mass

A

weight

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8
Q

chemistry studies what?

A

composition, porperties, interaction of matter

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9
Q

biochemisty studies what?

A

biological chemistry, which studies physiological process and disease

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10
Q

Elements are the simplist type of….

A

matter with certain chemical properties

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11
Q

how many naturally occuring elements are there?

A

92

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12
Q

chemical combinataion of diff elements is called a ?

A

compound

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13
Q

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

A

atoms

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14
Q

different elements are required by the body by different

A

amounts

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15
Q

whats required by the body in different amounts?

A

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

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16
Q

whats required by the body in small amounts?

A

trace elements

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17
Q

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

A

ultratrace elements

18
Q

atoms are ….

A

composed of subatomic particles

19
Q

protons are…

A

a large particle that carries a positive charge

20
Q

neutrons are….

A

a large particle that carries no electrical charge

21
Q

electrons are

A

small particles that carry a single negative charge

22
Q

whats in the central nucleus of an atom?

A

proton and neutron

23
Q

electron is in constant motion around the…

A

nucleus of the atom

24
Q

the # of protons equals the number of

A

electrons in an atom

25
what does the atomic number equal?
equals to the number of protons
26
how do you find the mass number?
number of protons plus the number of neutrons in an atom
27
why don't the elections contribute to the mass of the atom?
they're very light
28
whats an isotope?
all atoms of a certain element have the same atomic number
29
they have the same atomic number but don't have the same what?
atomic mass
30
which element often forms isotopes?
oxygen (O^16 the numbers represent different mass number)
31
what are radioactive isotopes?
unstable, release energy with atomic fragments until stability is gained
32
why is the outer shell of an elctron important
its important for chemical bonding
33
what's an ion?
something that gains or loses electrons
34
waht does the lines in h2 = M mean
sharing electrons
35
a compound =
2 different type of elements working together
36
why ionizing radiation called whatits called?
because its energy can remove electrons from atoms
37
what does it result to?
the formation of ions
38
what can free electrons do?
damage nearby atoms
39
what does ionizing radiation sources include?
x rays
40
Molecule is formed when?
a particle forms two or more 9