WorksheetsQuiz Arena __Chemistry Quiz
Total questions: 10
Worksheet time: 5mins
What is the smallest particle of an element that can exist or enter into chemical combination?
Molecule
Atom
Compound
Ion
Which of the following is a positively charged ion?
Cation
Anion
Molecule
Element
What is the empirical formula of a compound?
The formula for gases only
The formula for ionic compounds only
The formula showing the exact number of atoms
The simplest formula representing its composition
What is the molar mass of water (H2O)?
20 g/mol
16 g/mol
18 g/mol
22 g/mol
Which of the following is a method for balancing chemical equations?
Trial and error
Using coefficients
Ignoring the products
Using only one side
What is the mole fraction of a component in a solution?
The percentage of the component in the solution
The volume of the component divided by the total volume
The mass of the component divided by the total mass
The number of moles of the component divided by the total moles
What is the theoretical yield in a chemical reaction?
The amount of reactants used
The amount of excess reactants
The actual amount of product obtained
The maximum amount of product that can be formed
What is the purpose of titrimetric analysis?
To calculate the volume of gases
To analyze the color of solutions
To measure the mass of a solid
To determine the concentration of a solution
What is the formula for calculating percent composition by mass?
Mass of solvent / Total mass of compound x 100%
Mass of element in compound / Total mass of compound x 100%
Total mass of compound / Mass of element x 100%
Mass of element in compound / Mass of solvent x 100%
What is the molarity of a solution?
Moles of solute per liter of solution
Mass of solute per volume of solvent
Mass of solute per liter of solution
Moles of solute per mass of solution
