The formula for sodium chloride
NaCl
The prefix for 1 is:
mono
The definition of a homogenous mixture
A mixture of two substances that are evenly distributed.
The charge on Sodium (Na)
+1
I should wear gloves when:
Just before touching any glassware or chemical, during the entire experiment
The name of this polyatomic ion: SO42-
Sulfate
the number corresponding to the prefix tri
3
An example of a physical change
boiling, melting, evaporating
The charge on Sulfur
-2
What to do when there is an open flame (ex. using a bunsen burner)
keep flammable substances away from it
the charge on iron in the following compound: FeCO3
2+
The prefix for 4
tetra
an example of a chemical change
iron rusting, fruit browning, cake baking
the number of protons in Carbon -13
12
If a fire erupts in lab, the first thing I must do is:
notify the instructor!
the correct formula for calcium phosphate
Ca3(PO4)2
The name of CO2
Carbon dioxide
two examples of a diatomic molecule
Any two of these : H2 , O2 , N2 , Cl2, F2, I2
The the main group elements are in which columns
Group 1A, 2A, 3A, 4A, 5A, 6A, 7A, 8A
or
Group 1, 2, 3, 14, 15, 16, 17, 18
When acid spills on your skin you should
wash it with plenty of water (ONLY!) for 10 minutes
What is wrong with this following formula / name pair? (Co)2CO3 , copper (II) carbonate
it should be cobalt (I) carbonate
The name for S5F8
pentasulfur octafluoride
conversion factor between nanograms (ng) to grams (g)
1g = 109 ng
Name the 3 experiments AND the 3 scientists
JJ Thomson - Cathode Ray experiment
Robert Millikan - Oil Drop Experiment
Ernest Rutherford - Gold Foil Experiment
The fume hood is used for:
When volatile and/or strong chemicals are being used and are unsafe to be exposed to open air.