Physical vs. Chemical Changes questions with answers graded A+ 2023

Physical vs. Chemical ChangesSodium Hydroxie dissolves in water Physical Hydrochloric acid reacts with potassium hydroxide to produce a salt, water, and heat Chemical A pellet of sodium is sliced in two Physical Water is heated and changed to steam Physical Potassium Chlorate decomposes to Potassium Chloride and Oxygen gas Chemical Iron rusts Chemical When placed in H2O, a sodium pellet catches on fire as hydrogen gas is liberated and Sodium Hydroxide forms Chemical Evaporation Physical Ice melting Physical Milk sours Chemical Sugar dissolves in water Physical Wood rotting Chemical Pancakes cooking on a griddle Chemical Grass growing in a lawn Chemical A tire is inflated with air Physical Food is digested in the stomach Chemical Water is absorbed by a paper towel Physical When copper metal is heated in concentrated nitric acid, the copper dissolves to form a deep blue solution, and a brown gas is evolved from the acid. Chemical An iron scorches a shirt when you leave it on one spot too long Chemical The tires on your car seem to be getting low in very cold weather Physical Your grandmother's silver tea set gets black with tarnish over time Chemical