Exploring Elements and Compounds in Chemistry

What are the main objectives of this video lesson?

• To learn about the history of elements

• To identify essential elements in the body and environment

• To explore the periodic table

• To understand the structure of atoms

Tags

NGSS.MS-PS1-1

Which element makes up the largest percentage of the Earth's crust?

• Iron

• Silicon

• Oxygen

• Aluminum

Tags

NGSS.MS-PS1-1

What percentage of the human body is made up of oxygen?

• 18%

• 65%

• 10%

• 3%

Which element is an essential nutrient for growing plants and is released by ammonia?

• Aluminum

• Neon

• Sodium

• Nitrogen

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NGSS.MS-LS2-1

What is the chemical symbol for neon?

• N

• Na

• Ne

• Al

Which element is used in the production of kitchenware, aluminum foil, and cans?

• Helium

• Copper

• Sodium

• Aluminum

What is the primary use of helium?

• Conducting electricity

• Inflating balloons

• Making soap

• Removing stains

What is sodium bicarbonate commonly known as?

• Caustic potash

• Baking soda

• Mariatic acid

• Oil of vitriol

Which compound is used to remove stains or rust from metals?

• Calcium carbonate

• Potassium hydroxide

• Sulfuric acid

• Hydrochloric acid

What is the common name for calcium carbonate?

• Baking soda

• Caustic potash

• Chalk

• Oil of vitriol