Ch.1 - Intro to General ChemistryWorksheetSee 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: Select the best statement.A) Chemical changes provide the only valid basis for identification of a substance.B) Chemical changes are easily reversed by altering the temperature of the system.C) Chemic

Problem

Select the best statement.

A) Chemical changes provide the only valid basis for identification of a substance.

B) Chemical changes are easily reversed by altering the temperature of the system.

C) Chemical changes always produce substances different from the starting materials.

D) Chemical changes are associated primarily with extensive properties.

E) Chemical changes are accompanied by changes in the total mass of the substances involved.

Solution

We are asked to select the best statement from multiple choices about chemical change.


  • A chemical change is a kind of change in which a substance combines with another to form a new substance.
  • When chemical changes or reactions occur, the atoms are rearranged and the reaction is accompanied by an energy change as new products are generated.
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