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: Classify each of the following as an observation, a law, or a theory.(a) All matter is made of tiny, indestructible particles called atoms.(b) When iron rusts in a closed container, the mass of the co

Problem

Classify each of the following as an observation, a law, or a theory.
(a) All matter is made of tiny, indestructible particles called atoms.
(b) When iron rusts in a closed container, the mass of the container and its contents does not change.
(c) In chemical reactions, matter is neither created nor destroyed.
(d) When a match burns, heat is evolved.

Solution

We’re being asked to classify each statement as an observation, a law, or a theory. But first, let’s see what is the difference between an observation, a law, and a theory.


Observation

▪ what you see or observe what is physically happening through measurements in terms of an experiment

Law

▪ based on observation
▪ states what’s occurring or predict what’s going to happen through observations

Theory

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