Essay

How does a sólid became liquid



What i understand of how it converts  solid in liquidáis that molecules
Begin to be realeased. The movements have become so great that
The attractive forces of the molecules no longer hold them
In place the solid become co-free molecules and the crystalline
Structures become to colaps into liquid


Freezing
 As the líquid becomes to cool the particles go slow and get
More closer by the freezing point, as the time it pass the crystalline
Solid is being forming when the liquids is becoming a solid the
Temperatures become falling and the líquid becomes more viscous

Essays

Solid

Kinetic theory of matter

There aré only three statements of mater that aré solid  liquid

And gas

Atoms

 The átoms combine form a partícle that is called molecule

And they Almost aré the smallest particles that is made up of matter 

But there aré differents types of átomos like an old atóm make 

Gold ring.

Matter in motion

Mater in motion is the particles that get contact when they produce

Motion is so object move and there is a theory calls kinetic energy of matter

That tells about the particles that aré in constantly movement

And temperature & heat 

Aré the particles of materials the gastes they go the highest temperature 

They have the same and viceversa Way And

A fiscals exámenes of that is the hot tea and ice tea

They ate the samesparticles but 

Thinking critically

16. much discussion has focused on the need to drive more efficent cars and use less electricity.if the law of conservation of energy is true. why are people concerned about energy usage?
the problem is that the original form of the energy (gasoline) is  now mechanical energy and is of no use once wasteful.
to make it usable again it need to be gasoline which takes an extremely long process in nature.

17. if heat flows in only one direction, how can both hot and cold liquids reach room temperature as they sit on a table?
the heat from the hot object goes in the air and the air goes to the cold liquid

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?
if they are walking they are using kinetic energy but if they are sit down they are using potential energy

19. compare the 3 temperature scales you learned about. how are they different? how are they similar?
the celsius scale is based on 0°.
many physical and scientific formulas can be expressed on the kelvin scale
farenheit scale, water freezes at 32° and it boils at 212 °
similar: they are all based off the freezing and boiling points of water.
different: they define them at different numbers.

20. use what you know about the movement of thermal energy to explain why you would place a minor burn on your arm under cool, running water.
because heat is transfer from the warmer object to the cooler object.

DEVELOPING SKILLS

now when you are standing up on the tramp you have potential energy due to standing at a higher level  above ground.
when you are jumping on thr tramp you have both kinetic and potential energy. potential for the springs (as energy that is stored) and height.kinetic energy whwn you are moving in the air up and down.
so when you are in your highest point in the jump you have the most potential energy.
when in the middle half you have the most kinetic energy.
when you are back in the bottom, touching the mat you again have max potential energy due to the spings.

Skill builder

Skill builder
   



                                                           Reactions


                                   Endothermic.                   Exothermic

                          Baking bread                               Burning wood
         Striking a match to ligth it                      Exploding dynamite


Baking bread is because when you bake something the energy absorbes
Burning wood is because the energy atracted the heat
Striking a match to light it because when you strike the match the heat is absorbe
Exploding dynamite is because when the dynamite explodes the explosión is heat and buen it

Skill builder

                                    Suppose you are a home owner who wants to heat 1200Ft
                                 Of living space by using a solar heating sistem you contact
                                  A solar heating technician and ask to have 400Ft of solar 
                                    Collector installed.is your request reasonable
         
      
                                           Collector area 
                                            ------------------
                                           Living space 

           Proportion
    
               Collector area
               ------------------ == 400Ft
               Living space         -------    = 1
                                            1200Ft      --
                                                              3.   And mi personal request is 480,000 solar collector

Skill builder

A pendulum swings seven times per minute if the string Were half as long the pendulum world swing ten times per minute  if the original lenght  Were twice as long the pendulum would  swing five times per minute 

Answer 

Among more shorter the rope More times it is going to swing per minute

Bar graph

 ----- ----- ----- ----- 

= 5 swings per minute

----------- ----------

=7 swings per minute 

---------------------------

=10 swings per minute