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?\no physical change because no color change occurred\no physical change because the observation of a gas forming is evidence of a state change, which is reversible\no chemical change because a temperature change occurred, a solid disappeared, and a gas was produced\no chemical change because two substances were mixed, which always results in the formation of a new substance\ndone

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

Answer

Brief Explanations:

A chemical change occurs when new substances are formed. When magnesium reacts with hydrochloric acid, heat is released (temperature change), the solid magnesium disappears, and hydrogen gas is produced. Mixing two substances doesn't always mean a chemical change; it must result in new substances. A gas - forming in this case is due to a chemical reaction, not just a state change. Color change is not the sole determinant of a chemical change.

Answer:

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