Lab Flashcards

1
Q

When going from a smaller number to a larger number, what way do you move the decimal?

A

Left, value is going to be smaller

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2
Q

When going to from a larger unit to a smaller unit what why do you move the decimal?

A

right, value is going to get bigegr

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3
Q

Kilo

A

1000, 10^3 K

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4
Q

hecto

A

h 100 10^2

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5
Q

Deka

A

da 10^1

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6
Q

deci

A

d 1/10 10^-1

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7
Q

centi

A

c 1/100 10^-2

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8
Q

milli

A

m 1/1000 10^-3

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9
Q

micro

A

(the u thingy) 1/1000000 10^-6

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10
Q

macro

A

n 1/1000000000 10^-9

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11
Q

convert 1 kh to 1 dg

A
1 kg to dg 
k= 1000 10^3
dg= 1/10 10^-1
3--1= 4
10000 dg 
0=or 1x10^4 dg
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12
Q

Proportions, why important?

A

Because most medications are prescribed based on a persons’ weight

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13
Q

What is a solutiomn

A

a solute (particles) dissolved in solvent (water)

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14
Q

suspenison

A

In a suspension the particles are insoluble

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15
Q

homogeneous solution

A

solutes are evenly dispersed throughout solvent

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16
Q

heterogeneous solutions

A

solutes are not evenly dispersed throughout solvent

17
Q

Percent solution

A

this is determined by number of parts of solute per 100 parts of solution

18
Q

molarity

A

number of moles dissolved in 1 L of solution or moles per liter

19
Q

molecular weight

A

adding atomic weight in all molecules

20
Q

osmolarity

A
measure of number of particles in solution
# of oels x (number of particles)
glucose does not dissolve so osmolarity is 2
21
Q

How do you get total magnification

A

ocular lens x lens magnification

22
Q

Ocular lens mag

A

10x

23
Q

scanning lens

A

4x

24
Q

low power lens

A

10x

25
Q

high power lens

A

40x

26
Q

oil immersion lens

A

100x

27
Q

which objective lens requires the most light

A

oil immersion

28
Q

which objective lens requires the least light

A

scanning

29
Q

how do you fin actual size of something magnified

A

actual size= apparent size/ total magnification