Ch.2 - Atoms & ElementsWorksheetSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: Which quantity or quantities must always be the same on both sides of a chemical equation?I. the number of atoms of each kindII. the number of molecules of each kindIII. The mass of the reactants is equal to the mass of the products.A. I onlyB. II onlyC. III onlyD. Both I and IIIE. All of the above

Problem

Which quantity or quantities must always be the same on both sides of a chemical equation?

I. the number of atoms of each kind
II. the number of molecules of each kind
III. The mass of the reactants is equal to the mass of the products.

A. I only
B. II only
C. III only
D. Both I and III
E. All of the above