Anything
Cathode ray Tube
Negatively charged particles
Plum Pudding Model
mix of positive + negative charges
Gold Foil Experiment
protons and nucleus
What is the definition of a subatomic particle?
a small particle that makes up an atom
If you were to bring the negatively charged pole to the top of a cathode ray tube, what would the ray do?
Retract/Deflect
If you were to bring the positively charged pole to the top of a cathode ray tube, what would the ray do?
attract
1. Shiny
2. Malleable
3. Good conductor of heat/electricity
3 characteristics of Metalloids
1. all solid at room temperature
2. "semi-conducting" properties
3. have properties of elements in both other categories.
3 characteristics of Non-Metals
1. poor conductors of heat/electricity
2. some are dull/brittle solids at room temperature.
3. Some (most) are gas at room temperature.
is it possible for noble gasses to combine with other elements on the periodic table?
How would you neutralize an element when it comes to electrons and protons?
i.e. 9 protons + 9 electrons = 0 charge
What showed scientists that the atom is mostly empty space?
most particles passed straight through
What showed scientists that there was a dense, positively charged mass in the center of an atom?
Some particles were deflected.
What are the three subatomic particles?
Electron, Proton, and Neutron
What is the size of the Electron
9.019x10^-31
What is the size of the Proton?
1.673x10^-27
what is the size of the Neutron
1.675x10^-27