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Anatomy Chapter one > ch 2 chemistry > Flashcards

ch 2 chemistry Flashcards

1
Q

major elements

A

oxygen, carbon, hydrogen, nitrogen, calcium, phosphorus

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2
Q

lesser elements

A

sulfur, potassium, sodium, chlorine, magnesium, iron

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3
Q

trace elements

A

chromium, cobalt, copper, fluorine, iodine, manese, zinc, ect

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4
Q

niels bohr

A

model of atomic structure (planets)

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5
Q

nucleus

A

center of an atom

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6
Q

nucleus

A

composed of protons and neutrons

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7
Q

protons

A

have single positive charge

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8
Q

neutrons

A

have no charge

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9
Q

atomic mass

A

= total number of protons and neutrons

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10
Q

electrons

A

around the nucleus tiny particles with a single negative charge and very little mass

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11
Q

electrons

A

determine the chemical properties of an atom

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12
Q

valence electrons

A

electrons of the outermost shell determine the chemical bonding properties of an atom has a max number of 8

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13
Q

radioisotopes

A

unstable isotopes

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14
Q

radioactivity

A

the decay of isotopes

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15
Q

ionizing radionation

A

destroys molecules and produces dangerous free radicals and ions in humans can be fatal

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16
Q

alphaparticles

A

too large to penetrate the skin

17
Q

gamma rays

A

very dangerous (uranium and plutonium)

18
Q

physical half life

A

radioisotopes - time requires for half of its atoms to decay to a more stable state

19
Q

biological half life

A

radioisotopes- time required for half of it to dissapear from the body

20
Q

ions

A

charged particles with unequal numbers of protons and electrons

21
Q

ionization

A

electrons transfer from one to the other turning them both into ions

22
Q

anion

A

during ionization the particle that gains an electron and acquires a negative charge

23
Q

cation

A

during ionization the particle that loses electrons and acquires a positive charge

24
Q

Valence

A

the charge on an ion

25
Q

ions with oposite charges

A

are attracted to eachother

26
Q

electrolytes

A

substances that ionize in water

Anatomy Chapter one (4 decks)

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