JoAnn O.

Displacement of Volume

when a solid is submerged in water and it displaces its own volume of water

Volume

the amount of space an substance occupies

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Mass

measure of the quantity of material it contains

Temperature

how hot or how cold something is

Water boils at ______K, ______ degrees Celsius, and _____ degrees Fahrenheit

373, 100, 212

Water freezes at ______K, ______ degrees Celsius, and _______degrees Fahrenheit

273, 0, 32

Measured Numbers

numbers you obtain when you measure a quantity such as your height, weight, or temperature

Significant Figures

all the digits including the estimated digit

A number is a Significant Figure if it is

not a zero

zero between nonzero digits

zero at the end of a number

any digit in the coefficient of a number written in Scientific Notation

zero between nonzero digits

zero at the end of a number

any digit in the coefficient of a number written in Scientific Notation

A number is not a Significant Figure if it is

at the beginning of a decimal number

used as a placeholder in a large number without a decimal point

used as a placeholder in a large number without a decimal point

Exact Numbers

numbers obtained by counting items or from a definition that compares two units in the same measuring system

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If the problem deals with addition and subtraction you round off to the nearest________ _____

decimal point

If the problem deals with multiplication and division you round off to the nearest ________ ______

Significant Figure

Equalities

Show the relationship between two units that measure the same quantity

Prefix: k

kilo-

Prefix: d

deci-

Prefix: c

centi-

Prefix: m

milli-

Prefix: u

micro-

given quantity X ____________ ______________ = desired quantity

conversion factor

What are the four steps to solving a problem using conversion factors?

Given/Need

Plan

Equalities/Conversion Factors

Set up Problem

Plan

Equalities/Conversion Factors

Set up Problem

Density

compare the mass of the object to the volume of the object

Specific Gravity

ratio between the density of a substance and the density of water

% means ______

parts per 100

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