Lab Skills
What is an evaporating dish made of?
porcelain
Convert 8.7 g = ? mg
8700 mg
Describe the function of the collar on the Bunsen.
It adjusts the amount of air available to mix with the gas and changes the color (temperature) of the flame.
The Bunsen Burner is ignited from the gas through a _____ ______
A rubber tube
What is the name of the device that the beaker sits upon during heating over the Bunsen Burner?
The tripod (with wire gauze)
A qualitative observation involves ?
The five senses
Convert 80 mL = ? L
0.08 L
This is the person who clean spills and chemical accidents.
The teacher! :)
This is the device that may be used to ignite the Bunsen Burner.
The flint striker
The ________ is where the ignition of the Bunsen Burner takes place.
barrel
A wire gauze is used in the laboratory to ?
Distribute heat evenly under a heated beaker
If moving the Bunsen Burner, you should only touch the ____.
Base
When pouring a substance into a test tube, the tube should be held at this level.
Eye level
This is the variable that is being measured in an experiment.
The dependent
It is acceptable to dump chemicals down the sink. T F
False! The teacher disposes of them in a special container.
If glassware breaks in the lab, it is okay to put it directly in the garbage can. T/F
False! It goes into a special glass bin by the teacher!
What is the first step in using the Bunsen Burner?
Put on safety glasses
The independent
When drawing lab equipment scientifically, it is important to only use a_______.
A sharp pencil
A hypothesis is also known as a(n) ________ ______.
educated guess
A graduated cylinder is read at what point on the measured markings?
The meniscus
The luminous flame is also known as the ?
Safety flame (yellow)
This variable remains the same throughout the expermient.
The constant/controlled variable
When making a sketch of a beaker (glassware) it is important to always leave the top of the glass _____.
open
When heating a test tube, it is important to pay attention to overheating, also known as ________.
Bumping