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9. 27.11 M. James.  Std: 7-5.9Compare physical properties of matter (including melting or boiling point, density, and color) to the chemical property.

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Presentation on theme: "9. 27.11 M. James.  Std: 7-5.9Compare physical properties of matter (including melting or boiling point, density, and color) to the chemical property."— Presentation transcript:

1 9. 27.11 M. James

2  Std: 7-5.9Compare physical properties of matter (including melting or boiling point, density, and color) to the chemical property of reactivity with a certain substance (including the ability to burn or to rust.  Objective: Compare physical and chemical properties of a substance by making a foldable.  Bell ringer: Can you always identify a substance by how it looks? Why/why not?  Construct booklet  Insert notes  Discuss properties  Reflection: Can you always identify a substance by how it looks? Why/why not?

3  Std: 7-5.9Compare physical properties of matter (including melting or boiling point, density, and color) to the chemical property of reactivity with a certain substance (including the ability to burn or to rust.  Objective: Compare physical and chemical properties of a substance by making a foldable.  Bell ringer: without mentioning a name describe one of your friends.  Prep booklets  Insert notes  Discuss properties  Reflection: Why is what you see not always what you get?

4  heading

5  Matter has ________ and takes up ________.  Examples of matter are: ________________________________________ __________________________________  Draw one ex of matter.

6  Matter has __mass_ and takes up _space_.  Examples of matter are: (should have 7 or more) ________________________________________ __________________________________  Draw one ex of matter.

7 PURE SUBSTANCESMIXTURES  _____________-- is a pure substance made of only one type of atom. An ex is __________________.  _____________-- is a pure substance made of 2 or more elements chemically joined in a certain ratio. An ex is _______ p. 2

8 PURE SUBSTANCESMIXTURES  _an element_-- is a pure substance made of only one type of atom. An ex is __hydrogen, oxygen, iron, etc__.  _A compound_-- is a pure substance made of 2 or more elements chemically joined in a certain ratio. An ex is _water  A Mixture has no certain ratio or proportion.  Ex are iced tea, lemonade, Chex mix, milk, soda  Draw one: p. 3

9 PHYSICALCHEMICAL  Physical properties can be observed and measured without changing the kind of matter being studied.  Ex are  Melting point  Boiling point  Density  color  Chemical properties can be recognized only when substances react or do not react chemically with one another, that is, when they undergo a change in composition.  ex are  Rusting  burning  physical and chemical properties can be used to identify substances. p. 4

10 MELTING POINT Boiling Point  The temperature at which a solid can change to a liquid.  The temperature at which a pure substance melts is unchanging under constant conditions.  Therefore, the melting point of a pure substance can be used as a physical property for identification.  Ice melts to form __________ at 0 0 C or 32 o F.  The temperature at which a liquid boils.  During the process of boiling a substances changes from a liquid to a gas.  Boiling begins when the liquid starts to form bubbles throughout, which grow larger, rise to the surface, and burst.  As long as the substance is boiling the temperature of the liquid remains constant (at the boiling point).  The boiling point for pure water at sea level is ________ or 212 o F. p. 5

11  Density is a property that describes the relationship between the mass of a material and its volume.  Density=Mass/volume  Substances that are denser contain more matter in a given volume.  The density of a substance will stay the same no matter how large or small the sample of the substance, and therefore, density can be used as a physical property for identification of the substance.  For example, lead is a very heavy, dense metal. The density of lead is much greater than the density of the very light metal aluminum. p.6

12  Color can be used to help identify a substance, along with other properties.  By itself color is not a significant identifier of a substance.  Absence of color is also a physical property.  What could you use for a picture of color in your foldable? p. 7

13 GAS  Characteristics  Characteristics LIQUID SOLID p.8

14  Can you always identify a substance by how it looks? Why/why not?


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