A class observes two demonstrations: water changing into steam and a piece of wood burning and producing smoke. Which of the following is the best conclusion for these occurrences?
(A) W0ood burning is a chemical change because the gas is now a new substance with different properties.
(B) Both demonstrations must be examples of a physical change because a gas is produced in each.
(C) Both demonstrations must be examples of a chemical change because a gas is produced in each.
(D) Water changing into steam is a chemical change because the gas now has different properties.

Question

A class observes two demonstrations: water changing into steam and a piece of wood burning and producing smoke. Which of the following is the best conclusion for these occurrences?
(A) W0ood burning is a chemical change because the gas is now a new substance with different properties.
(B) Both demonstrations must be examples of a physical change because a gas is produced in each.
(C) Both demonstrations must be examples of a chemical change because a gas is produced in each.
(D) Water changing into steam is a chemical change because the gas now has different properties.

Unlock all answers

Related textbook solutions

Basic Chemistry

Principles of Chemistry Molecular Approach

Principles of Chemistry Molecular Approach

Chemistry: Structure and Properties

Chemistry: A Molecular Approach

Chemistry: A Molecular Approach

Principles of Chemistry: A Molecular Approach

Chemistry: The Central Science

Related questions

Related Documents

CHEM 112 Lecture Notes - Lecture 12: Chemical Polarity, Boiling Point, Bromine

CHEM 6B Lecture Notes - Lecture 5: Barium Hydroxide, Redox Titration, Cerium

CHEM 112 Lecture Notes - Lecture 14: London Dispersion Force, Electronegativity, Surface Tension

Weekly leaderboard