science v- special properties of materials
TRANSCRIPT
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SCIENCE VMs. Apple R. Sanchez
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What are the general properties
of materials?Mass
VolumeDensity
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What special talent do you have?
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Products are composed of materials and materials are composed of matter. Materials differ from each other – they differ in their properties, the products they make, their uses, and the ways on how we can dispose of them.
The properties of materials can be classified into two:• General properties• Special properties Let us study the second property of matter – the Special properties of materials.
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SPECIAL PROPERTIES OF
MATERIALS
Group Activity
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Activity 1: Materials: bottle of water, sponge, piece of chalk, paper cup, magnet, nail, rubber band, electric wire
Directions:1. Drop a piece of chalk.2. Get a paper cup and fill it with water. Dip the sponge into the water.3. Stretch a rubber band.4. Get a piece of nail and place it near a magnet.5. Observe a wire. Describe it.
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What have you found out?Substances Observatio
nProperties
1. Chalk 2. Sponge 3. Rubber band
4. Nail and Magnet
5. Electric wire
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Group Reporting• How did you find the
activity?• What did you learn from
the activity?• What are the special
properties of materials in your activity?
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• What are the properties of materials that you have observed or learn?• How can you define special properties of materials?
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The previous activity that you had pertains to the special properties of matter. Special properties pertain to the unique properties of one phase or kind of matter.
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1. Porosity – The ability of a material to hold liquid to a certain extent.
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2. Ductility – It allows a solid material to be transformed into wires.
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3. Brittleness – A property of solids to be broken into pieces.
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4. Elasticity - A property of solids to return to their original shape after being stretched
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5. Malleability - A property of solids to be hammered into sheets.
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6. Flexibility – The ability of a material to be bent without breaking.
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7. Luster – The ability of a material to reflect light.
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8. Magnetic – the ability to attract materials made of steel and iron.
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9. Electrical – The ability to conduct electricity.
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Can you now describe the special properties of materials?What is/are the use/s of special properties of materials to us people?
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Why are the special properties
of materials important?
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Identify the special property of matter described by each statement below. Write your answer on the space provided before each number.
_____1. Wet piece of cloth._____2. Electric wires connected to a generator._____3. Broken pieces of ceramic._____4. Stretched garter._____5. Rubbed hair comb that attracts pieces of paper.
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Assignment:On a short bond
paper, create your own crossword puzzle using the definitions and samples for each special property of matter.