Evidence of a Chemical Reaction 1. Which of the following observations indicates a chemical reaction? a) solid calcium f

[answerhappygod]

Evidence Of A Chemical Reaction 1 Which Of The Following Observations Indicates A Chemical Reaction A Solid Calcium F 1 (33.35 KiB) Viewed 40 times

Evidence of a Chemical Reaction 1. Which of the following observations indicates a chemical reaction? a) solid calcium forms at the bottom of your test tube after mixing two solutions b) you crush a solid cube of NaCl into a fine powder c) the liquid in your car's windshield cleaner freezes 2. Which of the following observations does not indicate a chemical reaction? a) gas bubbles form when you drop your Alka-Seltzer tablets in water b) a cold pack becomes cold when activated by mixing the interior components c) when pouring your soda can into a glass, you see a thick layer of foam on top a Writing and Balancing Chemical Equations 3. Write a balanced chemical equation for each chemical reaction: a) Solid zinc reacts with aqueous hydrochloric acid (HCI) to form zinc chloride and hydrogen gas. b) Gaseous methane (CH) reacts with oxygen gas to form carbon dioxide gas and liquid water. c) Aqueous calcium hydroxide reacts with carbon dioxide to form calcium carbonate and liquid water.