question 1\nwhich of the following is a physical change?\noxidation of iron\nwater boiling into water…

question 1\nwhich of the following is a physical change?\noxidation of iron\nwater boiling into water vapor\nfireworks\ndecomposition of nitrogen dioxide

question 1\nwhich of the following is a physical change?\noxidation of iron\nwater boiling into water vapor\nfireworks\ndecomposition of nitrogen dioxide

Answer

Brief Explanations:

A physical change is a change in which the substance changes form but not its chemical composition. Oxidation of iron is a chemical reaction forming iron - oxide. Fireworks involve chemical reactions for light and sound production. Decomposition of nitrogen dioxide is a chemical change. Water boiling into water vapor is a phase change from liquid to gas without changing the chemical nature of water (it's still H₂O).

Answer:

Water boiling into water vapor