Kilo
Hecto
Deka
Unit
Deci Centi Milli
Meter Gram Liter
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Kilo Hecto
Deka
Standard
Deci
Centi
Meter Gram Liter
.0185 kilograms = _______ grams 201.4 centimeters = _______ meters 8.120 meters = _______ millimeters
Milli
LENGTH Basic unit is the meter. Tools: Ruler, meter stick, tape measure millimeter
centimeter
meter
KILOMETER
TEMPERATURE A measure of how hot or cold something is. How much the particles in a substance move around! Tool: Thermometer Fahrenheit - BOO! Celsius - GREAT! Kelvin- AWESOME!
Conversion
Formula
Fahrenheit to Celsius
C = (F-32)/1.8
Celsius to Fahrenheit
F= 1.8(C) + 32
Celsius to Kelvin
K = C + 273.15
Kelvin to Celsius
C = K -273.15
Aluminum metal melts at 660.37 degrees Celsius. What is the temperature in Kelvin?
Pure iron melts at 1535 degrees Celsius. What is the temperature in degrees Fahrenheit?
Oxygen has a boiling point of 90.19 Kelvin. What is the temperature in Fahrenheit?
MASS Amount of matter that something is made of. Basic unit: gram Tool: Triple Beam Balance, Electronic Balance Milligram - a pinch of salt Gram- an apple Kilogram - a car
WEIGHT A measure of the force of gravity on an object. Unit: Newton Tool: Spring Scale
Mass
Weight
Mass is a measure of the amount of matter in an object.
Weight is a measure of the gravitational FORCE on an object.
Mass is always constant for an object no matter where the object is located in the universe. Mass is measured by using a balance. Mass is expressed in a unit of GRAMS.
Weight VARIES depending on where the object is in relation to the Earth (or any large body in the universe). Weight is measured by using a spring scale. Weight is expressed in Newtons.
1. An elephant has a _________ of 500 kg. 2. An ant has the same _______ on the moon as on the Earth. 3. A rock has a _______ of 3 Newtons. 4. A spring scale is used to measure _________. 5. A rock from the moon would have a different _________ here on the Earth. 6. A balance is used to measure __________.
VOLUME OF A LIQUID
VOLUME OF A REGULAR SOLID
VOLUME OF A FUNKY SOLID (IRREGULAR)
VOLUME
The amount of space that something takes up. Basic Unit for liquid: liter Tool: Graduated Cylinder (liquid and funky shaped objects) mL = milliliter L = liter Basic Unit for a solid: cubic centimeter (cc) OR (cm3) Tool: Measuring tape or ruler (solid)
A GRADUATED CYLINDER IS THE TOOL THAT IS USED MOST OFTEN IN THE CHEMISTRY LAB TO MEASURE LIQUID VOLUME!
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Volume of a liquid is measured in milliliters (mL) or liters (L) Volume of a solid is measured in cubic centimeters (cc)
DENSITY The amount of matter IN a certain amount of volume. Density = Mass Volume Density of Water = 1g mL Objects with density LESS than 1g/mL FLOAT. Objects with density GREATER than 1 g/mL SINK.
1.
2.
A rock has a mass of 20 grams and a volume of 10 cc. What is its density?
A liquid has a mass of 24 grams and a volume of 2 mL. What is its density?