Atoms and Elements: Key Concepts and Notes

The video tutorial introduces seventh graders to digital notes for their earth science unit. It covers the basics of atoms, elements, and molecules, explaining how atoms make up all matter. The periodic table is introduced, highlighting its role in organizing elements. Students learn about atomic numbers and the unique properties of elements. Practical exercises are included to reinforce understanding of atomic numbers and element identification.

What should you do if you find missing pages in your Earth Science binder?

• Ignore it and continue with the lesson.

• Take out the entire Earth Science section and recycle it.

• Ask a friend for their pages.

• Skip the Earth Science unit.

What are atoms?

• Elements on the periodic table.

• Particles that make up all matter.

• The smallest unit of life.

• Large molecules found in cells.

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NGSS.MS-PS1-1

NGSS.MS-PS1-5

What is the main difference between matter and organisms?

• Matter is only non-living.

• Organisms are made of cells, while matter includes everything that takes up space.

• Matter is only living.

• Organisms do not take up space.

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NGSS.MS-LS1-6

What is an element made up of?

• Molecules.

• One type of atom.

• Multiple types of atoms.

• Cells.

How many elements are there on the periodic table?

• 150

• 200

• 118

• 100

What does every element's abbreviation start with?

• A capital letter

• A number

• A lowercase letter

• A symbol

What does the atomic number of an element represent?

• The number of neutrons

• The number of protons and electrons

• The number of atoms

• The number of molecules

What is the atomic number of neon?

• 10

• 20

• 5

• 15

What is the abbreviation for potassium?

• Pt

• K

• Po

• P

What should you do if you have questions during the lesson?

• Write them on a post-it note and use the class chat.

• Wait until the next class.

• Ignore them.

• Ask a friend.