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General Chemistry Exam 1

Dr. R. Szostak

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Across
2.on the periodic table Pb, Ag, Au and Cu are examples
6.Cl-35 and Cl-37 are _________________ of chlorine
7.underlying reason for a series of related observations
9.HCl is an example
10.an ion with a positive charge
12.the physical state of bromine at room temperature
13.O2 is an example of a ________________molecule
15.what is not in the nucleus of an atom?
18.Hitting the bullseye every time is an example of ____________
19.what type of gases are neon and argon?
20.The common name for Hg2(+2)
23.density is an example of an ___________________ property
24.does not compress significantly
25.sand in water is an example of this type of mixture
26.a common example of a crystalline solid (helps to cool tea)
Down
1.On the periodic table fluorine is an example
3.unit of measure for time
4.temperature scale where water freezes at 273 degrees.
5.sulfuric acid and nitric acid are examples
6.hydrogen cyanide contains 3 atoms. How many sig figs are there for this number?
8.BaCl2.6H2O is an example
11.shorthand way to write aqueous in a chemical reaction
14.On the periodic table silicon and germanium are examples
16.the name for the reaction of a hydrocarbon with oxygen
17.the name of one of the isotopes of hydrogen
21.Gypsum is calcium sulfate dihydrate. How many anions does it contain?
22.6.02 x 10(+23) atoms equals one _____________

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