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Tuesday, January 31, 2017

Science Article "Matter"

1. https://newsela.com/articles/animal-flatulence/id/25679/

Animal flatulence: Scientists use Twitter to pass on information

Tuesday, January 24, 2017

Chapter 4 Online Exploration of Matter





  

A. Matter = Solids, Liquids and Gases video (Watch from 0:00 - 2:55)
1. Everything in the universe fits into 1 of 3 categories: it's either a _____, a ______, or a___.
2. True/False: Solids move about easily.
3. Explain the following statement: Even things that aren't moving, are actually moving.  How is this possible?
4. If you had a super-powerful microscope that could zoom in on the tiny stuff that makes up matter, it would look like millions of little lumps.
Little   : _________
Lumps: ________

 


B. 
   -Play the interactive game-
1.       Describe the arrangement and movement of the particles as you change from a solid to a liquid.  Describe the arrangement and movement of the particles as you change from a liquid to a gas. 
2.  Describe the arrangement and movement of the particles as you change from a gas to a liquid.  Describe the arrangement and movement of the particles as you change from a liquid to a solid.
3.  Pick 2 phase transitions and make a sketch of them.  Describe whether energy is lost or gained in this transition.  


  C. 
       -Play the interactive game-
1.       What happens to the liquid when you heat it?  When you heat something, do you add or subtract energy from it?
2.       Does the gas stay in one beaker?  Where does it go?  Why does this happen?  (Think: Energy)
3.       Cool down the gas.  What happens (Use your science vocabulary)?  Why does the liquid appear in both beakers?  
4.       Heat the liquid again.  What happens to the gases when you remove the lids?  Why does this happen?
5.      Describe the motion of the atoms in each beaker.
6.  Sort the 9 items into their correct Phase of Matter; make a list in your notebook.
7.       Take the Quiz; write the answers into your notebook.

  C. 

      Watch the How Stuff Works Videos States of Matter Changes in State

1.     What happens to the molecules of liquid water when it boils?
     2.  Explain the difference between boiling and evaporation.

    3. What is the boiling point of water in 'F/'C?

    4. What is the melting point of rock?  What is the melting point of water?
    5.  What happens to water molecules when they freeze into a solid?
    6.  At the 2:00 mark, estimate the volume of the liquid in the beaker, don’t forget units!

   How Stuff Works Videos States of Matter Evaporation

     1.  A water molecule is made up of what atoms?
     2.  Draw a picture of "evaporation".
     3.  Draw a picture of a molecule of water in the vapor phase.
     4.  Through a process called ________, water vapor can turn back into a liquid.
     5.  Where do you experience evaporation in real life?  Draw a picture.

E. 


1. 
a. Ice, clouds, ice cream melting, icicles dripping, and moist soda cans are the result of _________ ________ of ______.


2. 
a. What form is the water being cut with a chainsaw in?
b. Water can exist in what three forms?
c. Phases of matter = ______ of matter.

3.
a. About how many particles of matter make up a pencil?
b. Tiny particles in their smallest form consist of _____ and _________.
c. The states of matter are determined by the ______ and _____ of particles.
d. Sketch of picture of these "particles".


4.
a. Describe how the solid ice is different from the liquid water.
b. Draw a picture of the molecules of ice.
c. Draw a picture of the molecules that make up the liquid. How do they behave differently than those in the solid ice?
d. Solids:    definite shape        yes/no
                   definite volume     yes/no
e. Liquids: definite shape        yes/no
                  definite volume     yes/no
f. Gases:    definite shape        yes/no
                  definite volume     yes/no
g. Draw a picture of the molecules of a gas.
h. Which state of matter has the fastest moving molecules?  Explain.


5. 
a. You predict: What will happen to the ice cube if left out on the windowsill?
b. Define: phase change
c. Phase changes occur when ______ is added or taken away from a substance.
d. Melting involves the phase change from a _____ to a ______.
e. The melting point of water is __°Celsius or __°Fahrenheit.
f. The opposite of melting is ________.
g. ________ is the process of a liquid changing to a _____.  The molecules start to move ______ and have more/less energy.
h. The freezing point of water is __°C or __°F


6. 
a. What happened to the water in the glass?  Did it really just disappear?
b. ___________ involves a phase change from a ______ to a ___.
c. When vaporization occurs at the surface of a liquid, we call this __________.
d. Water _____ is present in the air around us.
e. Describe what you see in this container of water.
f. The boiling point of water is ___℃ or ___℉.
g. The opposite of vaporization is ____________.
h. ___________ is responsible for cloud formation.

7. 
a. What is the video showing as an example of melting?
b. What is the video showing as an example of freezing?
c. What is the video showing as an example of vaporization?
d. What is the video showing as an example of condensation?


8. 
a. There are _____ phases of matter.
b. Liquids have a definite volume but no definite _____.
c. Phase changes occur when ______ is gained or lost from a substance
d. ________ occurs when a liquid changes to a solid.
e. ____________ occurs when a liquid changes to a gas.



F. 

1.       Compare/Contrast the arrangement and movement of the molecules of a solid, liquid, and gas.  Make sure to use the term, “energy”.

     1. What's happening to the outside of the glass?  Describe what you see.
2.     Where are the water droplets coming from?
3.     Has this ever happened to you?  Where?  Describe the situation. 

   H.  http://www.footprints-science.co.uk/index.php?module=2&type=States%20of%20matter&section=Section1&info=5
  Play around with the animation.  Write a summary of the animation and line graph using the following terms: temperature, melting point, boiling point, solid, liquid, gas, melting, boiling, freezing, condensing.  Also, describe the movement and arrangement of molecules.


   I.  http://www.youtube.com/watch?feature=fvwp&v=PcoiLAsUvqc&NR=1
      


    1. As the molecules of a solid get hotter, they vibrate ______ and ______.
    2. How do the molecules of a solid behave?
    3. When a water molecule escapes into the air, why can't you see it?
    4. If you left a glass of water in the sun, why would it evaporate faster?
    5. What happens when water vapor molecules come into contact with a cold surface?
    6. The cooler the molecules get, the _______ they move.
    7. Where does the word "condensation" come from?

1.       Play the various interactive games.