Mon Homework for week of Jan 24-28 Chemical

Mon Homework for week of Jan 24-28 Chemical

Mon Homework for week of Jan 24-28 Chemical vs. Physical Change S. Learn Weds Chemistry Current Event due Thursday

Review Th Bond Test Fri Progress Reports 1 week from today

Tues C. Lab Day CSA Present Please place Balancing Equations 101 out to be collected. Explain the difference between

Physical Change and Chemical Change Physical Change A change in a substance that does not change the identity of the substance. Physical Change

Examples: Ice melting Ripping paper in half Mixing ice tea mix in water Chewing your food Chemical Change A change in a substance that results in a new substance being formed.

Chemical Change Examples: Burning a match Cooking food Rust forming Digesting food Physical Change or Chemical Change ? You decide.. Baking a cake

Chemical change The melting wax on a candle Physical change Putting salt on the icy sidewalk Physical change

Burning the wick of a birthday candle Chemical change Physical Change or Chemical Change ? You decide.. Sawing a piece of Physical change wood

Cutting your hair Physical change Bleaching your hair Chemical change Coloring in a coloring book

Physical change Chemical changes create new substances. substances New substances are the result of a chemical reaction. reaction

Mg(s) + 2 HCl(aq) MgCl2(aq) + H2(g) Another example : Electrolysis of water produces new substances known as Hydrogen and Oxygen gas (H2) (O2) 2H2O(l) --> 2H2(g) + O2(g)

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