Physical vs. Chemical

Click on each evidence. Then, click the correct category to place it there. Evidence of Physical Change Pen ink changes the color of white paper Food coloring in water Ice melting and changing from white to colorless A colored disk is placed in front of a spotlight to change the color of light White crystals of potassium hydroxide turn colorless when added to water A white wall is painted blue A soda fizzes when opened A person burps A water faucet is turned on Air escapes from a hole in a bicycle tire It is raining outside It is snowing Water sprays out of the ground The crackle of a wood fire is due to water evaporating quickly A flame test of copper produces a green flame Evidence of Chemical Change Two clear solutions are mixed and the resulting mixture is blue Silvery iron turns a yellowish brown after being left out in the rain for several weeks A brown solution is added to a colorless solution and the result is a colorless solution A yellow solution is added to a clear solution. A solid yellow compound is observed at the bottom. A solution of copper (II) sulfate is poured into baking soda. Fizz and a blue solid are observed. A Bunsen burner turns the end of a Q-tip black with ash Two solutions at 20 degrees Celsius are mixed. The resulting mixture heats to 35 degrees Celsius. Water is produced during combustion of wood Carbon dioxide is produced in cellular respiration A pool test kit turns different colors for different pH levels in the pool water A piece of pH paper turns from orange to red when placed into a colorless soda