Tuesday, November 8 Warm-up: Draw and label the parts of an atom to the best of your ability.

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Presentation transcript:

Tuesday, November 8 Warm-up: Draw and label the parts of an atom to the best of your ability.

Democritus 400 b.c. All things are made up of small pieces of something. ATOMOS JJ Thompson Atoms have electrons (Blue berrry muffin) Niels Bohr Electrons orbit the nucleus like planets around the sun. Modern Day Model There is an electron cloud around the nucleus.

Scientists Democritus – 1st to suggest all matter made of atoms John Dalton – 1st in modern day to identify atoms as solid balls (Theory of the Atom) JJ Thompson – 1st to discover electrons Ernest Rutherford – 1st to discover protons in the nucleus Neils Bohr – 1st to show electrons in energy fields James Chadwick – 1st to discover neutrons in the nucleus Modern Day Scientists – Electron Cloud Model is the one we use today. Electrons are moving like crazy in their energy field

1. What is pure solid gold made of. 2. What is pure oxygen gas made of 1. What is pure solid gold made of? 2. What is pure oxygen gas made of? 3. What is liquid mercury made of? 4. What is a water made of? 5. Which is bigger? Atom or Molecule?

Molecules and Atoms Brain Blasters Aluminum melts and becomes a liquid at 1,221°F. It turns into a gas at 4566 °F. Can IRON be a liquid? How do I make liquid IRON? Can IRON be a gas? How do I make IRON a gas? 5. T/F. ALL atoms can be a solid, liquid or gas.

If we can’t see air, how do we know it exists? If we can’t see air, how do we know it exists? List at least 3 examples of EVIDENCE or things you could do that helps us know that air exists.

Sodium is a chemical element with symbol Na and atomic number 11 Sodium is a chemical element with symbol Na and atomic number 11. It is a soft, silvery-white, highly reactive metal. Chlorine is a chemical element with symbol Cl and atomic number 17. It is a yellow, poisonous gas.

When you combine the two chemicals, you get table salt When you combine the two chemicals, you get table salt. NaCl What does this tell you about what happens when you combine two atoms to form a new molecule?

Baking Soda is made of many molecules of NaHCO3 Vinegar is made of many molecules of CH3COOH and water. Make a prediction as to what happens to the molecules when I mix them together. What happens to the MOLECULES and ATOMS? What are they DOING?

Why can’t protons and electrons both “live” in the nucleus of an atom? Thursday, October 27 Why can’t protons and electrons both “live” in the nucleus of an atom?

Look at this pile of marbles and pretend they are atoms. 1. If I wanted to make a model of 5 molecules of water, how many total hydrogens would I need? How many total oxygen would I need? How would I write the formula of 5 waters? How many total atoms would I need for 10C6H12O6

Write down what each of these scientists did that had to do with the model of an atom: Democritus – John Dalton – JJ Thompson – Ernest Rutherford – Neils Bohr – James Chadwick – Modern Day Scientists –

Draw the models of the atom from 400 b.c. to the model we have today.

You are handed a container of salt, a magnifying glass, and a microscope, and the formula for salt is NaCl. You teacher asks you the following: “What is salt?” List all the properties of salt and explain it’s chemical composition (what is it made of?).