Funny Chemistry

Add joy and share the fun of scientific experimentation with friends and family members.
Safety comes first. Be sure to follow each instruction carefully.
HAVE FUN!

 

 C:\Users\Hitham\Downloads\9G Environmental Chemistry.pps

Chemicals in daily life

CHEMICALS IN DAILY

LIFE

 

 Chemistry is an exciting experimental science which lets us to understand our world and makes our life easier.  Chemistry is in our everyday life: in our body, at home, in the nature... in every second of our lives! Why do onions make you cry?

 

 

Who has never cried while cutting an onion? (well, apart from those who have never cut one hehehe). This is a little explanation in easy terms.
Inside the onion cells there are some chemical compounds that contain sulfur. When you cut an onion its cells are broken and those chemical compounds then undergo a reaction that transforms them into a more volatile sulfured products, which are released into the air.
These sulfured compounds react with the moisture in your eyes forming sulfuric acid, which produces a burning sensation. The nerve endings in your eyes are very sensitive and so they pick up on this irritation. The brain reacts by telling your tear ducts to produce more water, to dilute the irritating acid. So you cry to keep your eyes protected from the acid.

There are some tricks to make onion-cutting less problematic:
- Chop the onion under cold water. The volatile sulfured compounds will be released but then they react with the water, instead of reaching your eyes.
- You can freeze the onion for 10 minutes before cutting it. The cold temperature of the onion will slow down the chemical reaction which forms the volatile sulfured compunds.

Trust me I'm a Chemist

Chemistry is an important subject that deal with many aspect of our life.. so you have to trust the chemists and but your life in their hand without fear _^ trust me I'm a chemist

in all aspects of our life,,, there are communication by various and interesting ways, even the birds talk with their special way of communication that all interestet in their music tones that take us to fly in the sky unconsiounsly _^ . 

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The Communication Process will help you to:

• Identify the messages that need to be sent
• Determine your target audience for communication
• Decide on your message format and timing
• Draft your message and gain approval where required
• Communicate your message, through communications events
• Gather feedback and improve your communication processes

By using this Communication Process, you can:

• Clearly identify your project stakeholders
• Identify your stakeholders communications needs
• Run any type of communications event to send out your message
• Ensure the right people receive the right information at the right time

 

http://arab4load.info/downloadf-Communication-Process-ppt.html