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Physical vs Chemical. Read pp. 11-14 in your textbook Define each of the following: Density______________________ Ductility ______________________ Solubility.

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Presentation on theme: "Physical vs Chemical. Read pp. 11-14 in your textbook Define each of the following: Density______________________ Ductility ______________________ Solubility."— Presentation transcript:

1 Physical vs Chemical

2 Read pp in your textbook Define each of the following: Density______________________ Ductility ______________________ Solubility _______________________ Malleability ______________________ Thermal Conductivity ______________ Physical property __________________ In your notebook, give three Physical Properties of your textbook using the list above

3 Physical Property A feature or characteristic of matter which can be observed without changing the identity of the matter color color texture texture taste taste smell smell Conductivity Conductivity Thermal Thermal electrical electrical malleability malleability malleability ductility ductility ductility solubility solubility solubility density density density Melting point Melting point Melting point Melting point Boiling Point Boiling Point magnetism magnetism

4 Characteristic Property A feature or characteristic of matter is specific to that substance and does not change with amount of substance What are some characteristic properties of WATER ? Density = 1 g/mL Melting point = 0 o C Boiling point = 100 o C

5 Chemical Property Describes how a substance reacts with other substances flammability flammability flammability MAIN POINT – something NEW is being formed Reactions with water Reactions with water Reactions with water Reactions with water Reactions with acid 2 nd ex Reactions with acid 2 nd ex Reactions with acid 2 nd ex Reactions with acid 2 nd ex Non - reactivity Non - reactivity Non - reactivity Non - reactivity

6 Physical Change A change in the properties of matter without changing the actual identity of the matter. The physical appearance may change, but you still have the same substance as before Chemical properties do not change Chemical properties do not change No energy is PRODUCED No energy is PRODUCED Usually can be reversed Usually can be reversed

7 Physical Change Examples of Physical Change: Breaking or cutting something Breaking or cutting something A change of state (melting, boiling, freezing, etc) A change of state (melting, boiling, freezing, etc) Dissolving Dissolving Making a mixture Making a mixture

8 Chemical Change A change that occurs when materials react or are broken into a different chemical. The physical appearance changes, and you have different substances than before BOTH physical and Chemical properties may change BOTH physical and Chemical properties may change Energy may be Produces OR Absorbed Energy may be Produces OR Absorbed Usually can NOT be reversed unless you make another chemical change Usually can NOT be reversed unless you make another chemical change

9 Chemical Change Examples of Chemical Change: Burning Burning Mixing with acid Mixing with acid Cooking (baking) Cooking (baking) Rusting (corroding) Rusting (corroding)

10 Chemical Change EVIDENCE of Chemical Change: Bubbling Bubbling Color change Color change Temperature change (exo or endo) Temperature change (exo or endo) Produce sound or light Produce sound or light Odor Odor


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