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How m any elements are in the compound: BrNMgCPbFCo 7 8 14 15 All the of the following are evidence of a chemical reaction except: a gas being created pouring two liquids together a change in the state of matter the temperature of a substance raising 15 degrees Mr. Bellman mixed two liquids together. After sitting for 2 minutes the liquids became a solid. This means: liquids always mix and form a solid there was no chemical change Mr. Bellman waited to long Mr. Bellman has seen a chemical change. Mrs. Ruble poured two solids into a plastic bag. She then poured in a red liquid. The substances in the bag quickly became hot. Has Mrs. Ruble seen a chemical reaction? Yes No Mr. Bellman burned sugar in class on a hot platefor everyone to see. Mr. Bellman explained thatthe main piece of evidence that proves the sugarchemically changed was: the sugar doesnt taste as good the sugar changed color the sugar can change back to its original state sugar can change randomly on it's own All of the following are examples of chemical changes except: gas being created leaves changing color carbon and oxygen separating from CO2 dissolving sugar in water Tearing paper, ice melting, and dry ice turning back into a gas are examples of chemical changes. True or False True False |