Study your flashcards anywhere!
Download the official Cram app for free >
 Shuffle
Toggle OnToggle Off
 Alphabetize
Toggle OnToggle Off
 Front First
Toggle OnToggle Off
 Both Sides
Toggle OnToggle Off
 Read
Toggle OnToggle Off
How to study your flashcards.
Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key
Up/Down arrow keys: Flip the card between the front and back.down keyup key
H key: Show hint (3rd side).h key
A key: Read text to speech.a key
42 Cards in this Set
 Front
 Back
The Scientific method

A logical approach to solving problems by observing and collecting data, formulating hypothesis, testing hypothesis, and formulating theories that are supported by data


Observing

Uses the senses to obtain information


qualitative

discriptive data


quantitative

numerical data


System

A system is a specific portion of matter in a give region of space that has been selected for study during an experiment or observation.


Hypothesis

A testable statement


constant

during an experiment the conditions that remain constant


variable

In an experiment the condition that changes


Model

A model in science is more than a physical object. It is often an explanation of how phenomena occur and how data and events are related


Theory

A broad generalization that explains a body of facts or a phenomena


Quantity

Something that has size, magnitude, and amount.


SI

Le systeme International d'Unites


Weight

the measure of the gravitational pull on matter


Derived Units

Combinations of SI base units


Volume

the amount of space occupied by and object.


Density

The ratio of mass to volume, or mass divided by volume.


Conversion factor

a ratio derived from the equality between two different units that can be used to convert from one unit to the other


Dimensional analysis

a mathematical technique that allows you to use units to solve problems involving measurements.


Accuracy

the closeness of a measurement to the correct or accepted value of the quantity measured


Precision

to closeness of a set of measurements of the same quantity made in the same way


Significant Figures

in a measurement consists of all the digits known with certainty plus one final digit, which is uncertain or estimated


Scientific notation

numbers are written in the form of M x 10^n, where the factor M is a number greator then or equal to one but less than 10 and n is a whole number


Directly proportional

two quantities are """"" to each other if dividing one by the other gives a constant value


Inversely proportional

two products are """""to each other if their product is constant


Area (equation)

length x width


Volume (equation)

length x width x height


Density (equation)

Mass/volume


Energy (equation)

force x length


Molar mass (unit)

Kilograms per mole, Kg/m^3


Molar volume (unit)

cubic moles per mole, m^3/mol


Area (unit abbr.)

m^2, square meter


Volume (unit abbr.)

m^3, cubic meter


Density

kilograms per cubic meter, kg/m^3


Tera

T, 10^12


Giga

G, 10^9


Mega

M, 10^6


Kilo

k, 10^3


Hecto

h, 10^2


deci

d, 10^1


centi

c,10^2


milli

m, 10^3


Percentage error (equation)

Percentage error= Value experimentalValue accepted/value accepted X100
