SI System (metric system)
Mass– The amount of matter
in an object
Volume– The space an object
takes up
Density– Amount of matter in a
given volume
– Mass/volume
Grams (g, kg, mg)
Liter (L, mL, mm3 , cm3)
g/mL, g/cm3, g/L, kg/L Density < 1.00 g/mL will floatDensity > 1.00 g/mL will sink
Scientific Measurement
Scientific MeasurementLength
Temperature– How hot something is.
– How much energy does something have.
Meters (m, mm, cm, km)
Celsius (Centigrade)
Kelvin ( K )
Laboratory Equipment
Write in the use of each object on the lines next to the picture.
Ring Stand and Iron Ring
Use: Iron rings connect Use: Iron rings connect to a ring stand and to a ring stand and provide a stable, elevated provide a stable, elevated platformplatform
ClampAttaches to the ring stand and holds test tubes.
Wire Gauze
Use: To support a container (such as a beaker or flask) during heating. Placed on ring.
Bunsen Burner & Striker
Use: Safely burns natural gas.
Safety Goggles
Use: to protect your eyes from chemicals and exploding glassware.
Test Tube
Use: Holds a small amount of solution (usually for heating)
Test Tube Tongs
Use: To hold / grab the test tube.
Spatula and Scoopula
Use: aid in the transfer of small amounts of solids
Crucible Tongs
Use: For handling hot, cold, corrosive, or sticky materials
Beaker
Use: For stirring, mixing and heating liquids.
Not used for measuring!
Erlenmeyer Flask
Use: To hold liquids and do reactions in it Used for swirling.
NOT USED in Measuring
Volumetric FlaskUse: To measure very precise amounts of liquid.
Evaporating Dish
uses:
Rapid evaporation
Burning chemicals in air.
Graduated Cylinder
Use: to measure volumes of liquids.
The red disk around the top is used to prevent breakage if knocked over.
Crucible
Use: for heating or melting compounds
Made of porcelain or metal
Clay Triangle
Use: Wire frame with porcelain used to support a crucible
Put on a iron ring and stand
Pipette (pipet)
Use: dispense small amount of liquids
Hot Plate
Use: heating substances
