If anybody will give useless answer I will delete their id
Answers
Answer:
Explanation:
a. Iodine
b. Hydrochloric acid oxidizes zinc to produce an aqueous metal salt and hydrogen gas bubbles.
c. When copper reacts with the elements (oxygen, water and carbon dioxide), it turns from its element color of reddish-brown to green. This chemical reaction is hydrated copper carbonate, and a famous example of it is the Statue of Liberty.
d. Here are just a few everyday demonstrations that temperature changes the rate of chemical reaction: Cookies bake faster at higher temperatures. Bread dough rises more quickly in a warm place than in a cool one. Low body temperatures slow down metabolism.
e. Changes of state are physical changes in matter. They are reversible changes that do not change matter's chemical makeup or chemical properties. For example, when fog changes to water vapor, it is still water and can change back to liquid water again.