Atoms

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PowerPoint describing the basic structure of atoms. Geared toward Middle School science and technology classes.

Atoms

  1. 1. Atoms What are they and what do they do?
  2. 2. What are atoms? • Atoms are the smallest particles of matter • Atoms make up everything around us • Molecules are combinations of atoms • Elements are only one type of atom • Compounds are made up of different types of atoms Hydrogen Water Gas2 Dan Kelly - Magic of Electrons - PLTW - Atoms
  3. 3. Atoms vs. ElementsWhat is the difference between atoms and elements?Atoms make up elements.To be an element, it can ONLY have ONE type of atom.The terms are often used interchangeably.For example, the Periodic Table of the Elements could also bewritten as the …Periodic Table of Different Types of Atoms.3 Dan Kelly - Magic of Electrons - PLTW - Atoms
  4. 4. Let’s RecapWhat is an atom?• Atoms are the smallest particles of matter.What is an element?• Elements are made up of only one type of atom.What is a molecule?• Molecules are combinations of atoms.What is a compound?Compounds are made up of different types of atoms.What are some examples of these? 4 Dan Kelly - Magic of Electrons - PLTW - Atoms
  5. 5. Components of an AtomWhat makes up an atom? At the center of all atoms is the Nucleus. The nucleus contains protons and neutrons. Protons: (+) Positively charged atomic particles Neutrons: Uncharged (neutral) atomic particles5 Dan Kelly - Magic of Electrons - PLTW - Atoms
  6. 6. Components of an AtomWhat makes up an atom? Orbiting around the nucleus are the electrons. Electrons: (-) Negatively charged atomic particles Nature prefers balance so if a particle is positively charged, it will attract negatively charged particles and vice-versa.6 Dan Kelly - Magic of Electrons - PLTW - Atoms
  7. 7. Components of an AtomRecap Where would you find the following parts of an atom and what is its charge? Protons: In the center of the atom Positive charge Neutrons: In the center of the atom Uncharged Electrons: Orbiting the atom Negative charge7 Dan Kelly - Magic of Electrons - PLTW - Atoms
  8. 8. Atomic NumberThe atomic number is equal to thenumber of protons in the nucleusof an atom.The atomic number identifiesthe element.How many protons are inthis nucleus?(assume the protons are red)8 Dan Kelly - Magic of Electrons - PLTW - Atoms
  9. 9. Periodic Table of Elements NASA Which element has 4 protons?9 Dan Kelly - Magic of Electrons - PLTW - Atoms
  10. 10. ElectronsThis course is titled “Magic of Electrons” and wewill focus mainly on the electrons present in an atom. Why?It is important to understand how and why electrons move inorder to understand how electricity works.In the coming presentations we will cover the importance ofelectrons and their importance.10 Dan Kelly - Magic of Electrons - PLTW - Atoms

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