Who was the first person to think about the atom's existence
Who is Democritus
100
The atomic number equals what
What is the proton
100
What is an ion
an atom or group of atoms with a positive or negative charge
100
What units represent atomic mass
What is amu
100
what did jj thomson discover?
What is the electron
200
List the subatomic particles, their charges, and location
proton, +, nucleus
neutron, 0, nucleus
electron, -, electron clouds
200
A neutral atom is when
electrons and protons are equal
200
a cation is
when an atom loses an electron and has a positive charge
200
What do you need to know for finding the atomic mass?
What is number of stable isotopes, mass of each isotope, and natural % abundance of each isotope
200
The atomic number of Neon is 10, how many protons?
What is 10
300
Goldstein discovered this subatomic particle
What is proton
300
Mass number equals
protons + neutrons
300
When an atom gains an electron and gets a negative charge
What is an anion
300
What must the percentage always equal
What is 100%
300
Xenon has an atomic number of 54 with a mass number of 131 and an ionic charge of +2.
protons 54
neutrons 77
electrons 52
400
State and explain Rutherford's experiment to discover the nucleus.
What is the gold foil experiment and shooting alpha particles into gold foil
400
where is the mass number and atomic number located in an abbreviation
mass number top left, atomic number bottom left
400
Where is an ion seen in an element abbreviation
What is top right
400
How do you convert the percentage to do the calculation?
What is convert to a decimal
400
The group of elements that tend to lose electrons
What is metals
500
List the 4 parts of Dalton's Atomic Theory
1. All elements are composed of indivisble particles called atoms.
2. Atoms of the same element are identical. The atoms of any one element are different from those of another
3. Atoms mix or combine in whole number ratios.
4. Chemical reactions occur when atoms separate, join or rearrange in chemical reaction.
500
The number of protons is 16 with a mass number of 35, how many neutrons are present
19 neutrons
500
If an atom has an atomic number of 16 with a +2 in the upper right of the abbreviation has how many electrons
What is 14 electrons
500
What if you don't have the percentages or the atomic mass?
Use algebra, but must have percentage of both
500
Calculate the atomic mass of chlorine if the two common isotopes have masses 35.45 amu (75% abundance) and 37.29amu (25%abundance)