(23) Which of the following processes is a physical change? baking cookies B) dissolution of sugar in water burning hydrogen in oxugen to produce water (D) combustion of sugar (E) None of the above Solution B) Dissolution of sugar in water explanation: Physical changes are changes affecting the form of a chemical substance, but not its chemical composition baking is a chemical change burning of H2+O2 == H2O is a chemical change Sugar combustion is also a chemical change whereas only sugar added to water only dissolved but no chemical change sugar is sugar and water is water just they mixed in proportion .