9. Tools Used to Measure

Length

the straight-line distance between two points

ruler, retractable metal tape, micrometer and vernier caliper

ways to measure length

ruler

for small measurements, not the most accurate

retractable metal tape

for long measurements, not the most accurate

micrometer and vernier caliper

used for small diameters and thickness of thin materials, accurate tool

volume

amount of space a substance occupies

volume of a solid (formula)

V = l * w * h, units are often expressed as cubic meters (m³) or cubic centimeters (cm³ = cc)

volume of a irregular shaped solid

can be measured by water displacement

volume of liquid

measure capacity in a container, most common units are mL & liters

important conversion

I mL = 1 cm³ = 1 cc

graduated cylinder, pipettes, beaker and flask

ways to measure liquids

graduated cylinder & pipette

accurate devices to measure liquid

beaker & flask

not as accurate to measure liquid

temperature

measure of the amount of molecular movement

0⁰ Celcius (in ⁰F)

32⁰ Fahrenheit (in ⁰C)

37⁰ Celcius (in ⁰F)

98.6⁰ Fahrenheit (in ⁰C)

100⁰ Celcius (in ⁰F)

212⁰ Fahrenheit (in ⁰C)

0⁰ C and 32⁰ F

Water freezes

37⁰ C and 98.6⁰ F

Average Body Temperature

100⁰ C and 212⁰ F

Water Boils

mercury or alcohol thermometers & digital thermometers

ways to measure temperature

Mass

measure of the amount of matter in an object

triple balance beam & digital scales

ways to measure mass

Time

duration

stopwatch & digital timers

ways to measure time

Mole

the amount of substance

6.02 * 10²³

mole (Avogardro's Number) (scientific notation)

October 23rd from 6:02 AM to 6:02 PM

mole day