with a question, "I wonder what would happen if?"
to see what others have done and then build on it
a bold statement
so others can accurately repeat your experiment
the stuff that happens
What if your hypothesis is wrong?
you learned something, change the hypothesis, modify the experiment
How did early philosophers come up with answers to explain the natural world?
reasoning, discuss, and debate (thinkers)
How do scientists come up with answers to explain the natural world?
try things: experiments (doers)
the bogus (fake) science to attempt to make gold out of random stuff
What is a model?
a representation of the real thing
Describe Dalton's first model of an atom.
hard, sphere, the same throughout
What was the beam made of in Crookes' glass tube?
negatively charged particles
Describe Thomson's model of an atom.
a positive sphere with evenly distributed electrons
What did Rutherford's deflected alpha particles prove?
They proved that there was a massive positively charged particle.
Name the 3 main atomic particles in an atom
electrons, protons, and neutrons
What are the charges of electrons, protons, and neutrons
electrons (-), protons (+), neutrons (neutral)
Explain how the homemade battery worked to power the watch.
The chemical reaction that happens when the acid (from the apple) meets the zinc nail (cathode) and the copper penny (anode) causing electrons to flow from negative (cathode) to positive (anode) creating a charge of electricity.
Organization of the Periodic Table
The periodic table is organized primarily on atomic structure.
What are majority of the elements on the Periodic Table classified as?
What are the five things you should label on a drawing of an atom?
Protons, Neutrons, Electrons, Electron Shell, and Nucleus
What do I need to identify on an element label from the Periodic Table?
Element (name), Atomic number, Atomic Symbol, and Atomic Mass
How many electrons can fit in the 1st shell?
How many electrons can fit in the 2nd shell?
How many electrons can fit in the 3rd shell?
How many electrons can fit in the 4th shell?
The atomic number is the number of what?
The atomic mass is the number of what?
PROTONS + NEUTRONS
Atoms of the same element that have a different number of neutrons.