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Thursday, March 14, 2019

Physical and Chemical Properties Essay

Did you observer any chemical changes in this experiment?YesWhat narrate did you use to decide that something was a chemical change? I sight during the application of the hydrochloric acid to some of the substances bubbling, and gageGive at least two examples of chemical changes you observed. Green changedfrom blue to application of HCL to Mg smoking and bubbling and CuCO3Classify the following properties of sodium metal as personal or chemical Silver metallic color corporeal Turns gray in air chemic Melts at 98oC Physical Reacts explosively with centiliter gas ChemicalClassify the following changes as physical or chemical Water freezes at 0oC Physical Baking soda when feature with vinegar produces bubbles Chemical Mothballs gradually disappear at room temperature Physical Ice cubes in a freezer get low-spiriteder with condemnation Physical Baking soda loses mass as it is heated Chemical Tarnishing of silver ChemicalHow would you show that dissolving table salt is a physic al change? Because the salt doesnt change to something else, it stays salt. boiling point the water and the salt provide still be there, not something else. cleanup spot Mix the leftover sodium hydroxide and hydrochloric acid in your beaker. This will neutralize them. Now, pour them down the drain with lots of water. Place the small amount of solid chemicals left (if any) in a small fictile bag and put it in the trash. After the burner fuel has completely cooled, rear end the cap on tightly and store it in your LabPaq.

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