Summarize what you learned this week about the electromagnetic spectrum HINT: What is it? What does it organize? How do we use these EM waves in our lives?

Electromagnetic spectrum consists of
Radio waves
Microwaves
Infrared
Visible light
Ultraviolet
X-ray
Gamma ray

We use these everyday in our life however they also have dangers.

Radio waves - their long wavelength allows them to help with communication
Danger - exposure to a lot of radio waves can cause cancer or leukaemia

Microwaves - used for heating up food and transferring heat to the food.
Dangers - exposure can cause cancers and other diseases.

Infrared - can be used for remote controls and security cameras.
Danger - can cause damage to the cornea in your eye

Visible light - used for photography and optical fibres.
Danger - intense sources can cause permanent or temporary damage to the eyesight.

Ultraviolet - can be used to sterilise food and sterilise surgical equipment.
Danger - can cause skin damage and may lead to a cancer.

X-rays - used to see the internal structure of tissues and bones.
Dangers - can lead to mutations and May damage the cells

Gamma- can be used to sterilise food and surgical equipment and kill microorganisms and other bacteria.
Dangers - May reach your cells and cause cancer and cell mutations which could result in mutations.

It won't lose or gain electrons if it's a covalent bond it shares the electrons with another atom or atoms. if it is an ionic bond it will lose the 3 electrons on the outer shell and become a positively charged ion.  credit goes to @sunshinebaby of answers.yahoo.com.

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