Your teacher lights a small candle and allows it to burn. At first, the candle wax melts, but then it seems to burn away and disappear. The candle also gives off smoke, heat and light Is this a physical or chemical change? Explain.

plants need sunlight, water, and carbon dioxide to make food. plants use the raw materials of water, nutrients they absorb from soil, and carbon dioxide to make sugars the plant can use. energy from the sun and chlorophyll are also needed.