| Day 1 (History) | Day 2 | Day 3 | Day 4 | Day 5 |
|---|---|---|---|---|
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Democritus
First to theorize about the existence of the atom was who?
|
The mass of an atom.
What is atomic mass?
|
An atom or group of atoms that has a positive or negative charge.
What is an ion
|
AMU, atomic mass units.
What is the way a atomic mass is measured?
|
6.022e23
What is Avargadro’s number?
|
|
a. All elements are composed of indivisible particles called atoms. b. Atoms of the same element are identical. c. Atoms combine in whole number ratios. d. Chemical reactions occurs when atoms separate, join, or rearrange.
What are the for major postulates of Dalton? (Name two)
|
The weighted average of all an element ‘s isotopes.
What is atomic number?
|
Group of atoms with a positive charge.
What is a cation?
|
Stable isotopes, mass of each, and natural abundance of each.
What is needed to find the Atomic mass?
|
The amount of atoms in an element.
What is a mole?
|
|
The nucleus (a small, dense center to an atom)
What did the Gold Foil experiment discover?
|
Neutral
If you have equal protons as neutrons , what is the charge?
|
Group of atoms or atom with a negative charge.
What is an anion?
|
Isotope(1)x(%).+ Isotope(2) x (%)
What is the equation for Atomic Mass?
|
the mass of a given substance divided by the amount of substance.
What is a molar mass?
|
|
J. J. Thomson
Who discovered the electron?
|
Element with same number of protons but different amount of electrons, giving a greater mass number.
What is an isotope?
|
A cation.
When an electron is lost, what does an atom become?
|
Sum of the masses of isotopes.
What is the average atomic mass?
|
distinct kind of atom or nucleus characterized by a specific number of protons and neutrons.
What is a nuclide?
|
|
a. Atoms are divisible. b. Not all elements are identical (isotopes)
Which of Dalton’s postulated are incorrect?
|
Protons and neutrons in an atom.
What is the mass number?
|
An anion
When an electron is gained, what does the atom become?
|
Weighted grade average.
What is an example of a real world problem where you would use a similar equation?
|
Atomic and microscopic worlds, allows transfer from atoms to grams.
What does the mole bridge?
|
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