9/29 – Warm Up #2 What are the subatomic particles found in the nucleus? With this information, predict the charge of the nucleus. The mass of silver in a beaker is 35.0 grams. When the silver is dropped into the beaker, the volume of the water changes. If the water level was initially at 25.0 mL, calculate the final volume of water, in mL. Fill in the blanks: “Opposites ______ (attract/repel), while like charges _______ (attract/repel).”
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9/29 Warm Up #2 What are the subatomic particles found in the nucleus? With this information, predict the charge of the nucleus. The mass of silver in.
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9/29 – Warm Up #2What are the subatomic particles found in the
nucleus? With this information, predict the charge of the nucleus.
The mass of silver in a beaker is 35.0 grams. When the silver is dropped into the beaker, the volume of the water changes. If the water level was initially at 25.0 mL, calculate the final volume of water, in mL.
Fill in the blanks: “Opposites ______ (attract/repel), while like charges _______ (attract/repel).”
9/30 – Warm Up #3In the early 1900’s, Ernest Rutherford performed an
experiment where he shot a POSITIVELY-CHARGED beam of radiation at a piece of gold foil.
First of all, remember that opposite charges ______ and like charges _____.
Most of the time, the beam of radiation went THROUGH the foil. This means most of the foil had a ________ charge. What part of the atom is this?
On rare occasions, the beam of radiation got DEFLECTED when it hit the foil. This means some of the foil had a _____ charge. What part of the atom is this?
Chapter 4.2-4.4The Nucleus, Atomic Mass and Isotopes
Remember:Nucleus = protons and
neutrons (POSITIVELY CHARGED)
DENSE – a lot of matter in a small space
A VERY small portion of the atom (mostly empty space)
Also Keep in Mind…Charges = positive,
negative, neutral
Like charges REPELPositive repels PositiveNegative repels Negative