1 Which of the following is an example of a physical change? A Water freezing into ice ( B ) A piece of wood burning C A toy car rusting D Zinc producing hydrogen gas when mixed with water

To determine which of the options is an example of a physical change, we need to understand the difference between a physical change and a chemical change.A physical change is a change in the state or properties of matter without any accompanying change in its chemical composition. The molecules are not changed in structure. Examples include changes in state (solid, liquid, gas), size, shape, and phase.A chemical change, on the other hand, involves a change in the chemical composition of the substance. This means that the molecules are rearranged to form new substances with different properties. Examples include burning, rusting, and reactions that produce new substances.Now let's evaluate the options:A) Water freezing into ice - This is a change in state from liquid to solid. The chemical composition of water (H2O) remains the same. This is a physical change.B) A piece of wood burning - Burning wood is a chemical change because it involves combustion, which changes the chemical composition of the wood as it reacts with oxygen to form carbon dioxide, water vapor, and ash.C) A toy car rusting - Rusting is a chemical change because it involves the reaction of iron in the metal with oxygen to form iron oxide (rust).D) Zinc producing hydrogen gas when mixed with water - This is a chemical change because zinc reacts with water (and usually an acid in the water) to produce hydrogen gas and zinc oxide.The correct answer is:A) Water freezing into ice - This is an example of a physical change.Final Answer: A Water freezing into ice