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Chemical Composition

Find the chemical composition of various materials, such as human beings, blood, seawater, air, the earth's crust and the sun.

What Is the Most Abundant Gas in the Earth's Atmosphere?
The Earth's atmosphere or air is composed of several gases. One gas is much more abundant than any other. Can you guess which one it is?

Elements in the Body by Mass Percent
You can download or print this pie chart of elements in the human body. The graph shows elemental composition according to mass percent.

Chemical Composition of the Human Body
This is the elemental chemical composition of the average adult human body.

What Is the Chemical Composition of Air?
Learn about chemical composition of the Earth's air. Percentages of the most common compounds are given, according to volume.

Elements in the Sun
You probably know the sun consists mainly of hydrogen and helium. Can you name the other elements found in our closest star?

What Are the Elements in the Human Body?
Do you know the chemical composition of the human body? Here's the list of elements, given in percentage according to weight.

What Is the Volume & Chemical Composition of Blood?
Do you know how many liters of blood are in your body? How about what's in your blood? Let's learn about the chemistry of human blood.

Elements in the Human Body
Find out what elements are in the human body and what these elements do.

Elemental Composition of the Earth's Crust
This is a table that shows the elemental chemical composition of the Earth's crust.

Urine Chemical Composition
Urine is a liquid produced by the kidneys to remove waste products from the bloodstream. Human urine is yellowish in color and variable in chemical composition, but here is a list of its principal components.

Compounds in the Earth's Crust
This table shows the chemical composition or abundance of chemical compounds in the Earth's crust.

What Are the Ingredients in Rubbing Alcohol?
Rubbing alcohol is used for disinfection and to soothe or cool skin. Here is a look at the chemical composition of rubbing alcohol.

What Is Battery Acid?
This is a look at the chemical composition of battery acid or the liquid used in car or automotive batteries.

What Is the Chemical Composition of Vinegar?
This is a look at the chemical composition of vinegar.

What Is the Chemical Formula of Sugar?
This is the chemical formula for table sugar, which is sucrose.

What Is Petroleum Jelly?
Petroleum jelly or petrolatum was discovered as a paraffin-like material coating oil rigs. Since then, it has been used in various ointments and as a lubricant. Here is a look at what petroleum jelly is and its chemical composition.

What Is the Element Symbol for Brass?
Here is the answer to the question: What is the element symbol for brass?

What Is the Chemical Composition of Human Sweat or Perspiration?
As you might imagine, human perspiration is mainly water. Have you ever wondered what else is in sweat? Here's a look at the chemical composition of perspiration and the factors that affect it.

Nail Polish Chemical Composition
Nail polish is a type of lacquer used to decorate fingernails and toenails. Here is a look at the chemical composition of nail polish and an explanation of what the ingredients do.

Elements in the Human Body Infographic
This infographic displays the element composition of the human body, the uses of the elements, and fun facts about body chemical composition.

What Is Denatured Alcohol?
This is an explanation of what denatured alcohol is, how it is denatured, and why it's dangerous to drink it.

Molecular Composition of a Human Cell
Molecular Composition of a Human Cell

What Is the Moon Made Of?
The Moon is not made of cheese! Here's a look at the real chemical composition of the Moon.

Element Abundance of the Universe
Learn about the element abundance of the universe.

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