Those Crazy Chemists!
Rutherford's experiments led to the discovery of this.
Nucleus
This law stats that energy cannot be created nor destroyed.
Law of conservation of energy.
Isotopes are atoms of the same element that have different what?
Number of neutrons or mass
How many moles are in 6.0g of Carbon which has an atomic mass of 12.010 amu?
.50 mol
This has the same mass as the proton
Neutron
This crazy scientist came up with the idea that electrons orbit around the nucleus in shells.
Bohr
This law states that mass cannot be created nor destroyed.
Law of conservation of mass
An atom of potassium contains 19 electrons and 20 neutrons. What is the mass number?
39
Determine the mass of 5.00 moles of Oxygen with a molar mass of 16.00 g/mol.
80.0g
The nucleus is made up of these
Protons and Nuetrons
Experiments with a cathode ray lead to the discovery of what?
Electrons
This is the law that explains why in a compound of methanol, there will always be the same number of carbons, oxygens, and hydrogens.
Law of Definite Proportions
Double Jeopardy!!! Bromine-80 has an atomic number of 35. How many neutrons does it have?
How many moles are in 9.03X1024 atoms?
15.0 moles
A neutral atom has no charge because of this
Same number of protons and electrons
Double Jeopardy!!! This was the scientist that discovered electrons.
JJ Thompson
This law explains why one can find two different compounds containing the same element, just in different whole number ratios of each other.
Law of Multiple Proportions
As the mass number of the isotope of an element increases, the number of protons does what?
Remains the same.
How many atoms are in 8.00 grams of chlorine?
1.36X1023
The name atom comes from a Greek word. What is the word AND what does it mean?
Atomos-Uncuttable
Name 3 of Dalton's 5 theories.
1. All matter is composed of atoms.
2. Atoms of the same element are exactly alike. Atoms of different elements are different.
3. Atoms cannot be subdivided, created, or destroyed.
4. Compounds are formed by the joining of two or more elements.
5. In chemical reactions, atoms are combined, separated, or rearranged.
This law was almost contradicted by Einstein's famous equation.
Law of Conservation of Mass
Who are you voting for Snow Board?
Mr. Cramer
Calculate the number of oxygen atoms in 10.0g of sulfur dioxide.
1.88X1023 atoms
Explain the gold foil experiment and why it lead to the discovery of the nucleus.
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