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.

Tags

NGSS.MS-PS1-1

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

• Calcium
• Iron
• Oxygen
• Potassium

A section of the Periodic Table of Elements is provided. What is the chemical symbol for magnesium?

• Mn
• Magnesium
• Mg
• 12

Compounds are different than elements because compounds are -

• A combination 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
  

Tags

NGSS.MS-PS1-1

Use the periodic table to determine the Chemical symbol for Iron.

•  Ir
• FE
• Fe
• I

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

• Element
• Chemical
• Atom
• Substance

Tags

NGSS.MS-PS1-1

The oceans are primarily composed of which two elements?

• carbon and hydrogen
• calcium and silicon
• hydrogen and oxygen

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NGSS.MS-PS1-1

What is the difference between a compound and an element?

• Compounds are made up of elements and can be chemically separated. Elements cannot be separated.

• Elements make up compounds. Elements can be separated but compounds cannot be separated.

• Elements are found on the periodic table and compounds are found on the dining room table.

Tags

NGSS.MS-PS1-1

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

• nitrogen
• carbon
• sulfur
• oxygen

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NGSS.HS-LS1-6

The definition of lithosphere is

• The outer layer of air surrounding the earth.

• The core of the sun.

• All the water in the oceans.

• The rigid outer layer of the earth.