Grade 3 Changes in Matter Worksheet

About this worksheet

Changes in matter help students explain how heating, cooling, and mixing can change observable properties helps third graders connect observations with scientific explanations instead of memorizing isolated facts. Students may identify the starting material but miss the process that caused the change, such as cooling causing freezing, or they may skip the before-and-after evidence. This worksheet uses short evidence-based situations so students must read the setup, identify the pattern, and choose the answer that fits the science idea named in the title. Students match changes with results, compare processes, use observable property evidence, and explain which observations show that matter changed. Support versions use familiar examples and direct wording. Standard and challenge versions add closer distractors and require more comparison. Encourage your child to point to the evidence in the prompt before choosing an answer. If the answer does not explain the observation or solve the stated problem, it is probably a distractor. That habit builds careful science reasoning and prepares students for longer investigations.