Get expert insights and community support for your questions on IDNLearn.com. Discover reliable answers to your questions with our extensive database of expert knowledge.
Water synthesis from H2 and O2 is a chemical change, while boiling and melting water are physical changes.
Chemical: The synthesis of water (H₂O) from hydrogen gas (H₂) and oxygen gas (O₂) involves breaking the existing bonds between O and H in their respective gases, and forming new bonds between H and O to create water. This represents a chemical change.
Physical: Boiling and melting water are physical changes where no new bonds are formed or broken. For example, when water boils, it transitions from a liquid to a gas without any chemical bond changes.
Physical: Ice melting into water and turning into steam are physical changes as the composition of the water molecules remains the same throughout these phase changes.
https://brainly.com/question/40818096