Plan: Text. Vocabulary. Question. Grammar exercises

Grammar exercises: ( on the subject )

These movements include hanging upside down and bending for extended periods. Gulping air during high-impact exercise may also relax the lower esophageal sphincter. This can force acid into the esophagus.

...
Cons

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  running.
  
• 
  sprinting.
  
• 
  weightlifting.
  
• 
  gymnastics.
  
• 
  cycling.
  
• 
  jumping rope.
  
• 
  stair-climbing.
  

What are some topics in chemistry?

The main topics in chemistry include acids and bases, atomic structure, the periodic table, chemical bonds, and chemical reactions.

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  Acids, Bases, and pH. Anchalee Phanmaha / Getty Images. ...
  
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  Atomic Structure. ...
  
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  Electrochemistry. ...
  
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  Units and Measurement. ...
  
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  Thermochemistry. ...
  
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  Chemical Bonding. ...
  
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  Periodic Table. ...
  
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  Equations and Stoichiometry.
  

Physical chemistry problems

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  What are the electronic structures of high-temperature superconductors at various points on their phase diagrams?
  
• 
  Can the transition temperature of high-temperature superconductors be brought up to room temperature?
  
• 
  Is Feynmanium the last chemical element that can physically exist?
  

Label each of the following as an acid or a base according to the Bronster-Lowry theory.

1. 
   HBr
   
2. 
   NaOH
   
3. 
   HCl
   
4. 
   HF
   
5. 
   HI
   

Pedtechnology:




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Game:
“Chemistry Topics Tree” is a free online knowledge level game, about the subjects of Chemistry Science, it is fields of study and key topics and concepts. Drag and drop the round pictures in the chemistry tree of knowledge. A small mosaic game for desktop computers , laptops and tablets, which may be played in the web browser. The chemistry Knowledge Board include 18 picteres to play with. The game is part of the Interactive Chemistry Labaratory educational tools.
This fun education class game may answer some o the following questions:
What chemistry include?
What is the study of chemistry?
Which are the basic chemical units?
How the ion changes when moving electrons?