Laboratory Mathematics

Question 1

____ is the minimum number of digits needed to express a particular value in scientific notation without the loss of accuracy.

Answer 1

Significant Figures

Question 2

Numbers the contain zeroes within them is ____.

Answer 2

significant

Question 3

Numbers that contain zeroes at the end of the number is ____.

Answer 3

significant

Question 4

Numbers that contain zeroes between the decimal point and the first digit is ____.

Answer 4

not significant

Question 5

All non-zero numbers are ____.

Answer 5

significant

Question 6

All zeros to the right of the decimal are ____ when followed by a non-zero number.

Answer 6

not significant

Question 7

All zeroes to the left of the decimal are ____.

Answer 7

not significant

Question 8

Two Major Systems

Answer 8

• English System
• Metric System

Question 9

____ is the first system of measurement.

Answer 9

English System

Question 10

____ was created by a king.

Answer 10

English System

Question 11

English system was created by a ____ based on his foot.

Answer 11

king

Question 12

English system was based on ____.

Answer 12

the King’s foot

lmao

Question 13

Which system is inaccurate?

Answer 13

English System

Question 14

____ is converted using fractions.

Answer 14

English System

Question 15

____ was created by scientists.

Answer 15

Metric System

Question 16

Metric system was created by ____.

Answer 16

scientists

Question 17

____ was based on units by 10.

Answer 17

Metric System

Question 18

Metric system was based on ____.

Answer 18

units of 10 (toes and fingers)

Question 19

SI unit is also known as ____ in French.

Answer 19

le Systeme International

Question 20

In Clinical Chemistry, when volume is measured, ____ is used as the unit of measurement.

Answer 20

Liter (L)

Question 21

In Clinical Chemistry, when analytes are measured, ____ is used as the unit of measurement.

Answer 21

mol/vol

Question 22

In Clinical Chemistry, when enzymes are measured, ____ is used as the unit of measurement.

Answer 22

Katal (kat)

Question 23

Components of a Laboratory Result

Answer 23

• Actual value
• Unit

Question 24

It is recommended that ____ be reported using moles of solute per volume of solution (substance concentration).

Answer 24

analyte

Question 25

It is recommended that analyte be reported using ____.

Answer 25

moles of solute per volume of solution

Question 26

Reporting of laboratory results is often expressed in terms of ____.

Answer 26

substance concentration or the mass of a substance

Question 27

# **Give the Formula** Celsius to Fahrenheit

Answer 27

* (C x 9/5) + 32 * (C x 1.8) + 32

Question 28

# **Give the Formula** Fahrenheit to Celsius

Answer 28

* (F - 32) 5/9 * (F - 32) (0.556)

Question 29

# **Give the Formula** Kelvin to Celsius

Answer 29

K - 273

Question 30

# **Give the Formula** Celsius to Kelvin

Answer 30

C + 273

Question 31

____ are a homogenous mixture of two or more substances with each substance retaining its own chemical identity.

Answer 31

Solutions

Question 32

Components of a Solution

Answer 32

* Solvent * Solute

Question 33

____ is the component of a solution that is present in the greatest amount.

Answer 33

Solvent

Question 34

____ is the component of a solution that dissolves the substance with it.

Answer 34

Solvent

Question 35

____ is the component of a solution that is present in a lesser amount.

Answer 35

Solute

Question 36

____ is the component of a solution that is being dissolved.

Answer 36

Solute

Question 37

Types of Solutions

Answer 37

* Colloidal * Emulsion * Saturated * Unsaturated

Question 38

# **Types of Solutions** It is not a true solution because the individual molecules are not mixed on a molecular basis.

Answer 38

Colloidal Solution

Question 39

# **Types of Solutions** These are colloidal solutions in which disperse phase and the disperse medium are immiscible.

Answer 39

Emulsions

Question 40

# **Types of Solutions** A solution in which the dissolved solute is in equilibrium with the undissolved solute.

Answer 40

Saturated Solution

Question 41

# **Types of Solutions** It does not contain all the solute molecules that the solution could possibly hold.

Answer 41

Unsaturated Solution

Question 42

____ refers to the weight or volume of the solute present in a specified amount of solvent or a solution.

Answer 42

Concentration of Solutions

Question 43

Three Basic Types of Solutions

Answer 43

* Percent * Molar * Normal

Question 44

____ are expressed as equal parts per hundred or the amount of solute per 100 total units of solution.

Answer 44

Percent Solutions

Question 45

Three Expression of Percent Solution

Answer 45

* Percent by mass * Percent by volume * Mass-volume percent

Question 46

Which expression of percent solution is not commonly used in the clinical laboratory?

Answer 46

Percent solutions