Science 8: Particle Nature Of Matter

SCIENCE 8

PARTICLE NATURE OF MATTER 1 of 49

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OBJECTIVES 1.infer from given situations or observable events what matter is made of; and 2.explain how these observed situations or events give evidence that matter is made up of tiny particles.

Matter

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Matter

What do you call to the thing that has mass and space?

What do you call the characteristics of matter? What are the properties of matter?

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Matter Direction: Analyze the following pictures

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Matter

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Matter

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Matter

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Matter

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Matter

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Matter

Look underneath your armchair and you’ll see your GROUP NUMBER.

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Matter

ACTIVITY 1 12 of 49

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Matter

ACTIVITY 2 13 of 49

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Matter

1. Based from your observation in the experiment, think of the materials as made up of tiny particle. Show how the particles of the materials mix to each other. 2. Provide reason for the observation you made.

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PARTICLE NATURE OF MATTER 15 of 49

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Matter Almost 2,500 years ago, Leucippus and his disciple, Democritus believed that nature consisted of two things, “atoms and the void that surrounds them

Leucippus

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Democritus

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Matter

They believed that “atoms are physically, but not geometrically, indivisible.” Democritus that any piece of matter Forbelieved Democritus, atoms are He called this particle, atomos, a can be dividedand andcompletely subdividedfull, intoso very small indestructible there is Greek word which means particles that this process ended at some no empty but space. indivisible point when a particle. piece is reached that could not be furtherBoth divided. Leucippus and Democritus had the idea that there are many different kinds of atoms and each of them had specific shape and size and that all atoms move randomly around in space.

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How was atomic structure discovered?

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Matter An atom is the smallest particle of an element that has all the properties of the element.

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Matter Atoms of most elements have the ability to combine with other atoms. Different elements have different properties because the combining atoms are different and the way the atoms are joined together are different.

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Matter A molecule is a particle consisting of two or more atoms combined together in a specific arrangement.

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Matter It is an electrically neutral particle. It is the smallest particle of an element or compound that can exist independently.

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Matter

For example . . .

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Matter

Atoms are too small to observe. These particles cannot be seen under the high-powered light microscopes used in school laboratories. The size of an atom is measured in angstroms. One angstrom is a unit of length equal to one ten millionth of a millimetre.

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Matter

The best light microscope can magnify an image only about 1,500 times. Electron microscopes create a highly magnified image of up to 1 million times.

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Matter

The scanning tunneling microscope (STM) allows scientists to view and scan the surface of very small particles like atoms. It can magnify an image 10 million times. The STM creates a profile of the surface of an atom and then a computer-generated model or contour map is produced. 26 of 49

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Matter

So, only a model of the surface of an atom is generated by a computer when a scanning tunneling microscope is used. The picture of atoms generated is unlike the picture we take with our cameras.

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Example

Give an example of observable event that shows evidence that matter is made up of tiny particles

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Example

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The Amazing Atomic Zoom

MATTER

QUIZ

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QUIZ 1. What do you call to the smallest particle that makes up a matter?

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QUIZ 2. What is the meaning of the word “atomos”?

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QUIZ 3-4. Who are the firs proponent about the concept of atom?

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QUIZ 5. What do you call to the combination of atoms?

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QUIZ 6. What is the unit of atom?

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QUIZ 7-10. Give one observable event that shows evidence that matter is made up of atoms.

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ASSIGNMENT

¼ sheet of paper

Illustrate the particle model of states of matter.

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