Chemistry unit 1 (10th grade)

yikes

 how did the model of the atom changed significantly between JJ Thomson and Ernest Rutherford

 JJ Thomson thought the whole atom was filled with dense matter and Rutherford discovered only the nucleus is dense and the rest is empty space 2.

Summarize our current model of the atom, including the location of all of the subatomic particles. 

protons and neutrons are approximately the same size and are in the tiny nucleus in the center of the atom 

• 

electrons are way smaller and are in the "electron cloud" in all of the area 

Outside of the nucleus 

Which subatomic particles are in the nucleus?

protons and neutrons

Which subatomic particles affect the charge on the atom?

protons and neutrons

Which subatomic particles affect the mass of the isotope?

protons (lamu) and neutrons (1 amu) 

 are the horizontal rows on the periodic table and determine

 the number of energy levels. 

are the vertical columns on the periodic table and determine

physical and chemical properties of an element. 

Where are the gases typically located on the periodic table?

Name all the possible signs of a chemical reaction:

• color change (new color) 

•forms a gas (bubbles) 

·gives off light/odor/energy 

•forms a precipitate (solid) temperature change