Physical Change: A physical change affects the form or appearance of a substance, but does not change its chemical composition. The substance is the same before and after the change. These changes are usually reversible. Examples: melting ice, breaking glass, dissolving sugar in water. Chemical Change: A chemical change results in the formation of a new substance with different properties. It involves a chemical reaction and often produces signs like color change, gas formation, heat, or light. These changes are usually not reversible by simple physical means. Examples: rusting of iron, burning wood, baking a cake.
Subject: Science
Grade: Grade 9, Grade 10
Type: Free Printable Worksheet
Provider: WorksheetGalaxy — Free K-12 Educational Resources