Solids

Kinetic Theory Of Matter

Matter is everything that takes up sapace it means that everything around us is matter, but emotions are not matter.. They also talk about that we can found water in three different ways: liquid, solid or gas.


Atoms

Atoms are the smallest particle in matter, when two atoms are combined it creates a particle called molecules. Atoms and molecules movement determine the physical state of matter.


Matter In Motion

Brown made an experiment were he saw that pollen grains in the water move constantly. In honor of him they called the constsant of matter Brownian motion , this idea is called kinetic theory of matter.


Temperature And Heat

Temperature is the average kinetic energy in an object and heat is the transfer of thermal energy from one object to another because of a difference in temperature. When temperature is high the faster the particles are moving and f the temperature falls particles move slowly but they never stop moving.


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Section Assessment

Thinking Critically 16. Much discussion has focused on the need to drive more efficient cars and use less electricity. If the law of conservation of  energy is true, why are people concerned about energy usage ? people is using energy for things that are not important . 17. if heat flows in only one direction, how can both hot and cold liquids reach room temperature as they sit on a table?   hot looses heat and goes to the air and the air goes to the cold . 18. think about what happens to jack and jill in the nursery room. what kinds of enrgy are used? how was each energy form used? both, kinetic and potential energy because if they are moving they are using kinetic energy and if they dont is potential energy. 19. compare the 3 temperature scales you learned about. how are they different? how are they similar? in the celsius scale water freezes at    0° and boils at   100 ° farenheit scale water freezes at   32 ° and boils at   212 ° kelvin scale is known as
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Skill Builder

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