WorksheetsGROUP 6 (Montalban-Ocares)
Total questions: 15
Worksheet time: 11mins
What is a reactant?
The chemical substances that begin the reaction.
What comes from the reaction.
The small number on the right of the chemical symbol.
The large number to the left of a formula.
What is a product?
The beginning formulas.
The large number to the left of a formula.
What's left of the chemical reaction.
The small number on the right of the chemical symbol.
What are the 3 types of Gravimetric analysis? Check all that applies.
Precipitate Gravimetry
Titrimetric analysis
Electrogravimety
Volatilization
Filtration improves the purity of both colloidal and crystalline precipitates.
TRUE
FALSE
Partially true
The statement lacks important details
Is a quantity that has both a number and a unit
Accuracy
Precision
Measurement
Explicit
What are the mechanisms of precipitate formation? Check all that applies.
Nucleation
Particle growth
Agglomeration
Volatilization
What does the Law of Conservation of Mass state?
Matter cannot be gained or lost in a chemical reaction.
Matter can only be lost in a chemical reaction.
Matter can be gained and lost in a chemical reaction.
Matter can only be gained in a chemical reaction.
Is a measure of how close a measurement comes to the actual or true value of whatever is measured
Precision
Accuracy
Yields
Chemical Equation
What is the left part of a chemical equation called?2H2 + O2 --> 2H2O
Reactants
Yields
Accuracy
Precision
Is the following equation balanced?...Al + O2 --> 2Al2O3
Yes!
No!
Not really!
Precisely!
How many elements are in C6H12O6?
1
30
33
3
What is the balance equation of S8 O2 → so3?
S8+12O2 → 8SO3
S8+8O2 → 8SO3
S8+12O2 → 6SO3
S8+16O2 → 8SO3
What is the molar mass of lithium carbonate?
73.89 g/mol
138.21 g/mol
167 g/mol
72.3g/mol
How would it affect the calculated molar mass if a student forgot to cover their experiment with parafilm over the weekend before filtering their product?
molar mass would be too low
molar mass would be too high
molar mass would certainly double
molar mass would increase
Which of the following is the net ionic equation for calcium carbonate production?
Ca+ + 3CO ----> CaCO3
Ca+ + 4CO ----> CaCO3
Ca+2 + CO3-2 ----> CaCO3
Ca+3 + CO3-2 ----> CaCO3
