which answer below correctly identifies the type of change and the explanation when magnesium comes into…

which answer below correctly identifies the type of change and the explanation when magnesium comes into contact with hydrochloric acid? physical change because no color change occurred physical change because the observation of a gas forming is evidence of a state change, which is reversible chemical change because a temperature change occurred, a solid disappeared, and a gas was produced chemical change because two substances were mixed, which always results in the formation of a new substance done

which answer below correctly identifies the type of change and the explanation when magnesium comes into contact with hydrochloric acid? physical change because no color change occurred physical change because the observation of a gas forming is evidence of a state change, which is reversible chemical change because a temperature change occurred, a solid disappeared, and a gas was produced chemical change because two substances were mixed, which always results in the formation of a new substance done

Answer

Brief Explanations:

A chemical change occurs when new substances are formed. When magnesium reacts with hydrochloric acid, a temperature change is observed, the solid magnesium disappears, and hydrogen gas is produced. These are signs of a chemical reaction forming new substances (magnesium chloride and hydrogen gas), not just a physical change like a state - change or lack of color - change. Mixing two substances doesn't always result in a chemical change, but in this case, the production of gas and disappearance of solid indicate a chemical reaction.

Answer:

chemical change because a temperature change occurred, a solid disappeared, and a gas was produced