https://padlet.com/mariana56200/3fy3gx9dcnhunb8 Summative activity en-us 2020-09-07 17:07:00 UTC 2026-01-22 19:04:08 UTC hello@padlet.com mariana56200 https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725488460 It was dicovered on 1895 by 3 scientists.
It was detected in the sun years before it was found on Earth. Helium has very low density.
Is used for keep cool satellite instruments cool. The most common thing people use it is for fill ballons and like that ballons can be in the air. It is totally unreactive, thats why it is also used for making fiber optics and semiconductors. 
Resource:
https://www.rsc.org/periodic-table/element/2/helium#:~:text=be%20lost%20forever.-,Helium%20is%20the%20second%20most%20abundant%20element%%20the%20in20universe,some%20sources%20of%20natural%20gas.]]> 2020-09-07 22:06:31 UTC https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725488460 mariana56200 https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725489509 Is the lightest of all metals,  highly reactive and flammable.
Lithium is present in biological systems but its functions are uncertain.
Its salts are very useful as drug for bipolar disorders in people and it is fundamental for the nervous system.
Resource: 
https://en.wikipedia.org/wiki/Lithium]]> 2020-09-07 22:07:45 UTC https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725489509 mariana56200 https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725492655 It was discovered in 1798. It is almost never found in its natural form. Its nonmagnetic and has very high thermal conductivity. Is toxic and can cause cancer in humans.
It is found in volcanic rocks and in some gems.
It is used in windows of x-ray machines and as shield in nuclear reactors.
Resource: 
https://www.ducksters.com/science/chemistry/beryllium.php#:~:text=Beryllium%20is%20most%20often%20found,of%20the%20world's%20beryllium%20production.]]> 2020-09-07 22:11:24 UTC https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725492655 mariana56200 https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725494231 Is a non-metalic element and it is essential for cell walls of plants.
It can be found in eye drops, mild antiseptics, whasing powder and tile glazes.
It is used as rocket fuel ignitier and in pyrothecnic flares. 
Resource: 
https://www.rsc.org/periodic-table/element/5/boron#:~:text=Boron%20occurs%20as%20an%20orthoboric,Mojave%20Desert%20in%20California%2C%20USA.]]> 2020-09-07 22:12:26 UTC https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725494231 mariana56200 https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725497289 All the life is based in this element. In the ocean the carbon is exchange with the water and the atmosphere.
It helps to regulate the temperature, makes life possible, provides a big amount of energy.
 It is found in rocks and sediments, in the ocean, in the atmosphere and  in living organisms.
Resources: 
https://oceanservice.noaa.gov/facts/carbon-cycle.html#:~:text=Where%20the%20carbon%20is%20located,atmosphere%2C%20and%20in%20living%20organisms.]]> 2020-09-07 22:15:30 UTC https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725497289 mariana56200 https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725499048 It is the most abundand element in life. It is very reactive.
We can found it on water, plants, animals and in a lot of solid things in the world. 
It is needed to survive, for the combustion of food  and for the prosuction of important things like steel, plastic, etc.
Resource:
http://sciencenetlinks.com/lessons/oxygen-machine/#:~:text=To%20burn%20food%20for%20the,eliminate%20the%20carbon%20dioxide%20produced.]]> 2020-09-07 22:17:31 UTC https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725499048 mariana56200 https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725500219 Fluorine is the most reactive and electronegative element in the world.
 It is found in China, Mexico and Europe. Specially in rocks coal and clay. 
It protects people from dental decay, but if it absorb too frequently it could cause theet diseases, it gives strong to some bones.
Resource: 
https://www.lenntech.com/periodic/elements/f.htm#:~:text=The%20main%20mining%20areas%20for,ppm%20are%20contanined%20in%20it.

]]> 2020-09-07 22:18:56 UTC https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725500219 mariana56200 https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725501307 Neon was discovered on 1898. It is a completely inert gas. 
It is found in very small pieces in Earth. It is produced only with a process called destilation.
It is used to produce only one thing and other gases are mixed to have more colors. 
Resource: 
https://www.ducksters.com/science/chemistry/neon.php#:~:text=Neon%20is%20a%20very%20rare,a%20process%20called%20fractional%20distillation.

]]> 2020-09-07 22:20:07 UTC https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725501307 mariana56200 https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725504082 It is an abundand element and very reactive that was discover on 1807.
It is found in the ocean, salt lakes, and in undergrounds. 
Is used as salt in the food, for animals survive, the most common thing people use it is for giving flavor to the food. 
Resource: 
https://www.ducksters.com/science/chemistry/sodium.php#:~:text=Sodium%20is%20the%20sixth%20most,salt%20lakes%2C%20and%20underground%20deposits.]]> 2020-09-07 22:23:30 UTC https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725504082 mariana56200 https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725506425 It is not dense and is an essential element in plants and animals.
It is found in a lot of minerals and in the sea, where there are trilliions of this element.
Magnesium is used in products such as car seats, computers, cameras and some other important tools. 
Resource:
https://www.rsc.org/periodic-table/element/12/magnesium#:~:text=Magnesium%20is%20the%20eighth%20most,tonnes%20now%20produced%20each%20year.]]> 2020-09-07 22:24:40 UTC https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725506425 mariana56200 https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725508312 It is rarely found uncombined in the world. 
Is found in cans, kitchen utensils, aeroplane parts and in a lot of products.
It cannot be used alone because it is not completely strong.
This element is used as an alloy because it is not strong in a great variety of things, so it need to be mixed with other elements to work good.
Resource:
https://www.rsc.org/periodic-table/element/13/aluminium#:~:text=Aluminium%20is%20the%20most%20abundant,by%20the%20Hall%E2%80%93H%C3%A9roult%20process.

]]> 2020-09-07 22:26:36 UTC https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725508312 mariana56200 https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725509180 It is found in the sun and in the stars.
This element is very useful,  is used to make concrete and bricks, it is a refractory for high temperature work and is a principal ingredient for make glass.
Silicon is very important for animals and plants life and it is an inert element.
Resource:
https://periodic.lanl.gov/14.shtml#:~:text=Silicon%20is%20present%20in%20the,being%20exceeded%20only%20by%20oxygen.]]> 2020-09-07 22:27:33 UTC https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725509180 mariana56200 https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725514340 This element is a very reactive element and is never found as a free element on Earth.
It is used in the manufracture of fertilizers and the red phosphorus is used for making pesticides.
Is found in many minerals and in the human body.
It is a fundamental element in the functioning of the human body and in the growth of plants.
Resource:
https://www.ducksters.com/science/chemistry/phosphorus.php#:~:text=Phosphorus%20is%20not%20found%20in,found%20in%20the%20human%20body.]]> 2020-09-07 22:33:26 UTC https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725514340 mariana56200 https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725515215 It is mostly found in hot areas like volcanic regions and as minerals.
This element is used in the production of sulfuric acid and in the manufacture of phosphorus acid. 
It is essential to all living things and was discovered approximmately on 1808.
Resource:
https://www.rsc.org/periodic-table/element/16/sulfur

]]> 2020-09-07 22:34:21 UTC https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725515215 mariana56200 https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725515924 Is a gas that forms diatomic molecules, it was discover on 1810.
It is found on Earth's crust and in ocean water. Also in the most common minerals.
This element is used in pools, to keep them clean and safe, and is used for making insecticides, pharmaceuticals and for cleaning things.
Resource:
https://www.ducksters.com/science/chemistry/chlorine.php#:~:text=Chlorine%20can%20be%20found%20in,%2C%20and%20sylvite%20(KCl).

]]> 2020-09-07 22:35:08 UTC https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725515924 mariana56200 https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725516614 It is used for the production of titanium and other reactive elements. And is also used to protect incandescent light bulbs to stop oxygen from corronding the filament.
It is found in fluorescent tubes and in low energy light bulbs. 
Argon is the third most abundant gas on the atmosphere. 
Resource: 
https://www.rsc.org/periodic-table/element/18/argon

]]> 2020-09-07 22:35:54 UTC https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725516614 mariana56200 https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725519103 It is more used in fertilisers, to make liquid soaps, in farmaceuticals and in the manufacture of glass. Potassium makes all this thing combined with other elements.
This element is found in all cells (Plants and humans cells)
 It is essential to life and plants are the most rich on potassium.
Resource:
https://www.rsc.org/periodic-table/element/19/potassium]]> 2020-09-07 22:38:46 UTC https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725519103 mariana56200 https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725519665 It is very light and has very low density. 
It is found in form of rocks and minerals in the ocean water.
Calcium compounds are use in the production of metals, water purification and some other things. 
Its part of a compound that makes our teeth and bones hard.
Resource:
https://www.ducksters.com/science/chemistry/calcium.php#:~:text=Calcium%20is%20rarely%20found%20in,element%20in%20the%20Earth's%20crust.]]> 2020-09-07 22:39:23 UTC https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725519665 mariana56200 https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725524734 Is a non-metal element that was discovered on 1772.
It is found in all the air and in some  minerals.
Is used to make ammonia, Hydrogen and Nitrogen are combine and they have a result of ammonia. It is also used in explosives, perseverates fresh food, the manufacturing of steel, reduce fire. And the liquid is used as a frefrigerant to keep food cold.
Resource:
https://www.ducksters.com/science/chemistry/nitrogen.php#:~:text=The%20Earth's%20atmosphere%20is%2078,Earth%20including%20plants%20and%20animals.

]]> 2020-09-07 22:45:14 UTC https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/725524734 mariana56200 https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/732954016 It is the most abundand element in the world. It was discovered on 1766 by Henry Cavendish.
It is used to make ammonia for agricultural fertiliser, for remove sulfur for fuels. It is also used for making flat plastic sheets. 
It is found in the sun and most of the stars, in greater quantities as water.
This element is produced by heating natural gas with steam.
Resource:
https://www.rsc.org/periodic-table/element/1/hydrogen#:~:text=Hydrogen%20is%20easily%20the%20most,the%20greatest%20quantities%20as%20water.

]]> 2020-09-09 20:15:32 UTC https://padlet.com/mariana56200/3fy3gx9dcnhunb8/wish/732954016