NEW
Font size
WorksheetsCHEM 101- Pretest
Total questions: 10
Worksheet time: 4mins
1. Which molecule is a dipole?
Which is the weakest type of intermolecular force?
London dispersion force
hydrogen bonding
ion-dipole
dipole-dipole
Which of the following is the most polar covalent bond?
Cl-Cl
Cl-O
H-Cl
N-Cl
These are forces that holds within a molecule.
Ion-dipole interaction
Dipole-dipole interaction
Intermolecular Forces
intramolecular Forces
Substance that changes the rate of reaction but is neither changed nor consumed is called?
catalyst
product
reactant
reagent
What happens to the rate of reaction when 5% HCl is used instead of 15% HCl to react CaCO3?
It becomes faster
It becomes slower
It stays the same
No reaction will take place
How many grams does 0.027 mol of copper weigh? (Molar mass Cu: 63.55 g/mol)
0.00042 g
1.7 g
17 g
24000 g
If you calculate the maximum amount of product that could be obtained in a chemical reaction, you are calculating the ______.
Actual yield
Experimental yield
percent yield
theoretical yield
What is the reactant that is not totally consumed in the reaction?
limiting
excess
experimental
actual
Magnesium hydroxide, the active ingredient in milk of magnesia, neutralizes stomach acid, primarily HCl, according to there action: Mg(OH)2 +2HCl→2H2O+MgCl2 . How much HCl in grams can be neutralized by 5.50 g of Mg(OH)2? (Molar masses: Mg(OH)2 = 58.33 g/mol ; HCl = 36.46 g/mol)
4.5 g HCl
5.46 g HCl
6.88 g HCl
3.75 g HCl
