Monday, May 27, 2019

Physical and Chemical Properties Essay

Did you observer any chemic changes in this experiment?YesWhat evidence did you role to decide that something was a chemical change? I observed during the application of the hydrochloric acid to some of the substances bubbling, and smokingGive at least two examples of chemical changes you observed. Green changedfrom blue to application of HCL to Mg smoking and bubbling and CuCO3Classify the pursuance properties of sodium metal as physical or chemical gold metallic color Physical Turns gray in air Chemical Melts at 98oC Physical Reacts explosively with chlorine gas ChemicalClassify the following changes as physical or chemical Water freezes at 0oC Physical Baking soda when combined with vinegar produces bubbles Chemical Mothballs gradually disappear at room temperature Physical Ice cubes in a freezer get smaller with time Physical Baking soda loses mass as it is modify Chemical Tarnishing of silver ChemicalHow would you show that dissolving table salt is a physical change? Becaus e the salt doesnt change to something else, it stays salt. furuncle the water and the salt will still be there, not something else.Cleanup Mix the leftover sodium hydroxide and hydrochloric acid in your beaker. This will even off them. Now, pour them down the drain with lots of water. Place the small amount of solid chemicals left (if any) in a small plastic bag and limit it in the trash. After the burner fuel has completely cooled, screw the cap on tightly and store it in your LabPaq.

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