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WorksheetsChemistry A Lab Practical Review 2022
Total questions: 19
Worksheet time: 14mins
You have a solid unknown sample. It does not melt with a flame but conducts electricity. What type of compound is it?
Ionic
Covalent
Can't decide from info
The correct name for CaBr2 is
calcium dibromide
calcium (II) bromide
calcium bromide
carbon bromide
The correct name for P2O5 is
potassium oxide
dipotassium pentoxide
diphosphorus pentoxide
phosphorus oxide
The formula for aluminum acetate is
Al(Ac)3
Al(C2H3O2)3
AlC2H3O2
Al3C2H3O2
The formula for sulfur hexafluoride is
S6F
SF6
SuF5
SFl6
The formula for barium hydroxide is
BaOH
Ba(OH)2
BaO
BaH2
How many moles of carbon atoms are there in 5g of carbon? (Hint: molar mass is 12.01 g/mol)
60 mol
17 mol
0.42 mol
7 mol
The electrons in a POLAR covalent bond are shared...
Evenly
Unevenly
Electrons are not shared
None of the Above
HBr has a difference in electronegativity of 0.7. Based on the table, what kind of bond is HF?
Nonpolar covalent
Polar covalent
Ionic
H2O has a difference in electronegativity of 1.4. Based on the table, what kind of bond is
H2O ?Nonpolar covalent
Polar covalent
Ionic
Which element is present, is the flame is red?
Strontium
Barium
Lithium
Potassium
Caramel is made on the stove by melting various substances together. Based on the melting point, would you expect it to be ionic or covalent?
Ionic
Covalent
When you mix the ions in the image, you see a precipitate form. The formula of the compound is
AgCO
Ag2CO3
Ag3CO2
What is the molar mass of NaCl? (Use the periodic table)
28
58.44
39.99
46.45
What is the correct Lewis Structure for ammonia NH3
What is the correct Lewis Structure for water?
A
B
C
D
Draw the electron dot structure for Hydrogen (just symbol and valence electrons)
