Elements and Compounds Quiz

Carbon is considered an element while carbon dioxide is considered a compound. This is because carbon dioxide is –

• a gas at room temperature. 
• made of two different elements.
• given off by green plants.
• useful to human beings.

Which of the following is the most abundant element Earth’s crust?

• Calcium
• Iron
• Oxygen
• Potassium

What is the chemical symbol for Magnesium?

• 12
• Mg
• 24.31
• Ma

Compounds are different than elements because compounds are -

• combinations of two or more elements
• binations of two or more elements B not able to be broken down into parts
• made from the same type of atoms
• a pure substance, elements are not

Which of the following three elements are most abundant in the plants and animals that make up the biosphere?

• Sulfur, oxygen, and hydrogen
• Nitrogen, silicon, and oxygen
• Phosphorous, oxygen, and iron
• Oxygen, carbon, and hydrogen

The smallest particle of any particular type of matter is known by which of the following terms?

• Element
• Chemical
• Atom
• Compound

The oceans are primarily composed of which two elements?

• Carbon and hydrogen
• Calcium and silicon
• Hydrogen and oxygen
• Nitrogen and phosphorus

Which two elements are the most common in the rocky outer surface that makes up Earth’s lithosphere?

• Silicon and oxygen
• Oxygen
• Nitrogen and oxygen
• Oxygen

All of the following elements are major components of living things on Earth EXCEPT -

• Nitrogen
• Carbon
• Sulfur
• Oxygen

The atmosphere of Earth is comprised mostly of oxygen and -

• Carbon
• Hydrogen
• silicon
• Nitrogen