Emily made a chart that included physical changes and chemical changes. Which change should be categorized as a chemical change?
iron becomes rusty a gold bar is melted lake water evaporates a granite rock is polished
Question: Emily made a chart that included physical changes and chemical changes. Which change should be categorized as a chemical change?
A. iron becomes rusty
B. a gold bar is melted
C. lake water evaporates
D. a granite rock is polished
Answer: