- Ch.1 - Matter, Measurement & Problem Solving101
- Ch.2 - Atoms & Elements96
- Ch.3 - Molecules and Compounds118
- Ch.4 - Chemical Reactions and Chemical Quantities49
- Ch.5 - Introduction to Solutions and Aqueous Solutions78
- Ch.6 - Gases98
- Ch.7 - Thermochemistry83
- Ch.8 - The Quantum-Mechanical Model of the Atom49
- Ch.9 - Periodic Properties of the Elements71
- Ch.10 - Chemical Bonding I: The Lewis Model80
- Ch.11 - Chemical Bonding II: Molecular Shapes, VSEPR & MO Theory79
- Ch.12 - Liquids, Solids & Intermolecular Forces38
- Ch.13 - Solids & Modern Materials35
- Ch.14 - Solutions66
- Ch.15 - Chemical Kinetics83
- Ch.16 - Chemical Equilibrium52
- Ch.17 - Acids and Bases109
- Ch.18 - Aqueous Ionic Equilibrium128
- Ch.19 - Free Energy & Thermodynamics72
- Ch.20 - Electrochemistry87
- Ch.21 - Radioactivity & Nuclear Chemistry49
- Ch.22 - Organic Chemistry139
Chapter 1, Problem 38
Classify each substance as a pure substance or a mixture. If it is a pure substance, classify it as an element or a compound. If it is a mixture, classify it as homogeneous or heterogeneous. a. wine b. beef stew c. iron d. carbon monoxide
Video transcript
Classify each statement 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 released
Classify each statement as an observation, a law, or a theory. a. Chlorine is a highly reactive gas. b. If elements are listed in order of increasing mass of their atoms, their chemical reactivities follow a repeating pattern. c. Neon is an inert (or nonreactive) gas. d. The reactivity of elements depends on the arrangement of their electrons.
Classify each substance as a pure substance or a mixture. If it is a pure substance, classify it as an element or a compound. If it is a mixture, classify it as homogeneous or heterogeneous. a. sweat b. carbon dioxide c. aluminum d. vegetable soup
Determine whether each molecular diagram represents a pure substance or a mixture. If it represents a pure substance, classify the substance as an element or a compound. If it represents a mixture, classify the mixture as homogeneous or heterogeneous.
Determine whether each molecular diagram represents a pure substance or a mixture. If it represents a pure substance, classify the substance as an element or a compound. If it represents a mixture, classify the mixture as homogeneous or heterogeneous.
Classify each of the listed properties of isopropyl alcohol (also known as rubbing alcohol) as physical or chemical. a. colorless b. flammable c. liquid at room temperature d. density = 0.79 g/mL e. mixes with water