Relative Mass in Chemistry
A Grade 11 chemistry worksheet covering relative atomic mass, relative molecular mass, and isotopic abundance calculations.
Includes
Standards
Topics
Relative Mass in Chemistry
Name:
Date:
Score:
Read each question carefully and provide your answers in the space provided. Show all your work for calculations.
1. Define relative atomic mass (Ar) and explain why it is not usually a whole number.
2. The standard chosen for relative atomic mass is one-twelfth the mass of a single atom of .
3. Relative molecular mass (Mr) is the sum of the of all the atoms in a molecule.
4. Which of the following is the primary reason for the existence of isotopes?
Difference in the number of protons
Difference in the number of electrons
Difference in the number of neutrons
Difference in nuclear charge
5. Chlorine has two main isotopes: chlorine-35 (abundance 75.77%) and chlorine-37 (abundance 24.23%). Calculate the relative atomic mass of chlorine.
6. Calculate the relative molecular mass of sulfuric acid (H2SO4). (Given: Ar(H) = 1.0, Ar(S) = 32.1, Ar(O) = 16.0)
Related Worksheets
pH and pOH Calculations Worksheet
A Grade 11 Chemistry worksheet focusing on pH and pOH calculations, including strong acids, bases, and ion concentrations.
Ionic Bonds Worksheet
Explore the fundamentals of ionic bonding, including electron transfer, ion formation, and properties of ionic compounds, suitable for Grade 11 Chemistry students.
Molecular Geometry Worksheet
A Grade 11 Chemistry worksheet focusing on VSEPR theory and molecular shapes, including questions on bond angles and polarity.
Lewis Structure Practice Worksheet
A Grade 11 Chemistry worksheet focusing on drawing and understanding Lewis Structures, including octet rule, formal charge, and resonance.
Molecular Structure Worksheet
A Grade 11 Science worksheet covering key concepts in molecular structure, including VSEPR theory, hybridization, and intermolecular forces.
Calorimetry Principles
This worksheet explores the fundamental principles of calorimetry, including heat transfer, specific heat capacity, and calculations related to calorimetry experiments.
Grade 11 Chemistry: Word Equations
A worksheet for Grade 11 Chemistry students focusing on writing and balancing word equations for chemical reactions.
Types of Chemical Reactions Worksheet
Explore different types of chemical reactions including synthesis, decomposition, single displacement, double displacement, and combustion with this Grade 11 chemistry worksheet.