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1. Nitrogen makes up 78% of the air around us
2. Titan has an atmosphere made up of over 98% of nitrogen
I used 2 of my brothers toys to make this model.

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I used 4 marshmallows and a marker to color 2 of them red
1. the formula is H202
2.it is used on the skin to prevent infection
Hydrogen and Oxygen = Hydrogen Peroxide

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I used 2 marshmalows and a stick to put them together.

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Can Be used in food
ALso Flavoring

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1. It is in most candies.
2. It's melting point is 294.8°F (146°C)

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I used a coin and gems.
The chemical formula is CH4.
The atoms are carbon and hydrogen.
Methane is also a powerful greenhouse gas.
Domestic livestock have a great source of Methane

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1. Methane is gas that is found in small quantities in Earth's atmosphere.
2. Methane is a powerful greenhouse gas (GHG).

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I did nitrogen.

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1. Sodium Chloride is used in cleaning products.
2.We use sodium chloride in our body in order to survive.

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1. disinfectant for wounds
2. can be produced naturally from the body

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When Chlorine is isolated as a free element chlorine takes the form of a greenish-yellow color, Chlorine is 2.5 times heavier that air

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When Chlorine is isolated as a free element chlorine takes the form of a greenish-yellow color, Chlorine is 2.5 times heavier that air

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1 its baking soda
2 showing different molecules

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A solid
Elements are oxygen and iron.

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It is used for fireworks
and for rockets

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1. Carbon dioxide levels rise in crowded rooms
2. Carbon dioxide has no taste ,color  or smell