Chemical Reactions Notes In a chemical reaction with different properties are in Existing bonds must be broken ( and new bonds must be formed Evidence (Indicators) of a Chemical Reaction - Change in - Unexpected - Produces Physical Change: a e are broken a sk formed Physical Properties Include: __ roperties Include:)

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Chemical Reactions Notes In a chemical reaction with different properties are in Existing bonds must be broken ( and new bonds must be formed Evidence (Indicators) of a Chemical Reaction - Change in - Unexpected - Produces Physical Change: a e are broken a sk formed Physical Properties Include: __ roperties Include:)

Answer 1

The evidence of a chemical reaction includes a change in color, the formation of a gas, the formation of a precipitate, and a change in temperature.

Answer 2

This question is asking for the evidence or indicators of a chemical reaction. In a chemical reaction, the existing bonds between atoms are broken and new bonds are formed, resulting in the formation of new substances. The evidence of a chemical reaction can be observed through several changes. These include a change in color, the formation of a gas (often seen as bubbles), the formation of a precipitate (a solid that forms and settles out of a liquid), and a change in temperature. These changes indicate that a chemical reaction has occurred because they are the result of the breaking and forming of chemical bonds.

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