Câu hỏi
Compare a physical change to a chemical change? A physical change keeps the same composition A chemical change creates a new product A chemical change keeps the same composition A physical change creates a new product
Giải pháp
4.7
(131 Votes)
Sarah Olson
Veteran · Tutor for 12 years
Answer
A. A physical change keeps the same composition B. A chemical change creates a new product
Explanation
1. Define Physical and Chemical Changes A physical change is a process where the substance changes its form or appearance but keeps the same chemical composition (e.g., melting ice). A chemical change results in the formation of one or more new substances with different compositions (e.g., rusting iron).2. Match Statements to Definitions "A physical change keeps the same composition" matches the definition of a physical change. "A chemical change creates a new product" matches the definition of a chemical change.3. Eliminate Incorrect Options The statements "A chemical change keeps the same composition" and "A physical change creates a new product" are incorrect based on the definitions.