Matter is made of Atoms

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Key concepts: 

Matter is anything that has mass, has volume and is made of atoms.

Atoms are the building blocks of matter.

Everything in the universe is made up of elements or combinations of elements from the Periodic Table.

Atoms are made of protons, neutrons, and electrons.

Atoms are ridiculously small and the majority of an atom is empty space.

Keynote: Matter 1 What are Atoms

Video: How Small Is an Atom? TedEd:  https://www.youtube.com/watch?v=yQP4UJhNn0I

Classwork

At the top of your page, write “Atom Classwork   Nov 13”

  1. If you have one atom of Oxygen and you break it in half, would you still have Oxygen?  Explain.
  2. Draw a model of an atom labeling all of its parts. On your model, identify which parts have a positive or negative charge or have no charge.
  3. Explain what would happen if an electron and a proton were brought near each other and then released. Why would this happen?

Homework (add the date and a title to your page)

4. How do we define “matter?”

5. Can you think of anything that is not matter?

6. What does it mean for a substance to be a “pure substance?”

7. What subatomic particle has a neutral charge?

8. Where are electrons found in the atom?

Answers for Classwork and Homework

1. If you were to split one atom of Oxygen in half, you would no longer have Oxygen.  All atoms of Oxygen must have 8 Protons and, in order to be stable, must have 8 Electrons as well.

2. Model description: electrons with a negative charge surrounding the nucleus (neutral) which contains protons (positive charge) and neutrons (no charge).

3. They would be attracted to each other because opposite charges attract and an electron is negatively charged while a proton has a positive charge.

4. Matter is anything that has mass and takes up space.  Every object and substance in the universe is considered matter.

5. Something that is not matter would be anything that is not tangible.  This includes feelings, thoughts and emotions.  Electricity and magnetic fields are actually matter (they are the 4th state of matter that we will not discuss in this unit called “plasma”).

6. A “pure substance” is an object that can’t be broken down any further without being changed into something new.  Pure substances are elements like Gold and compounds like water.

7. Neutrons

8. Circling the outside of the nucleus (in Electron Shells)

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