Which answer below correctly identifies the type of change and the explanation when magnesium comes into contact with hydrochloric acid?
o 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

1. how did the works progress administration (wpa) contribute to the cultural development of american cities? a. by paying artists to create new works for public spaces b. by granting scholarships to underprivileged students to study art c. by sponsoring cultural exchanges with musicians from other countries 2. which of the following best describes the effect of the new deal on the great depression? a. the new deal eased the effects of the great depression. b. the new deal alone ended the depression. c. production rates during the great depression only fully recovered as the united states prepared to enter world war ii.