Infrared waves, micro waves, radio waves because they are weaker.
Boiling points.............
The answer is ( The concentrations of the products and reactants do not change.)
Chemical reactions involve the breaking of bonds and forming new bonds. All chemical reactions involves forming of new substances. For this, stuation, it is evident that a chemical reaction occur because a precipitate formed. Therefore the correct answer is stated in statement 1.
Answer: metal
Explanation: it says element so conductor and semiconductor are out and a halogen is a group of gases on the periodic table so this brings up to a conclusion of metal.
NOTE: I am not a professional***