Subatomic Particles
This subatomic particle has a negative charge
How many elements are on the modern periodic table?
118
Who is known as the Father of the modern Periodic Table?
Dmitri Mendeleev
One of these positively charged particles is equal to one AMU
What is a proton
The periodic table is organized by rows and columns also known as
periods and groups
(should be in the same order for full credit or identify the rows are periods and groups are columns)
The atomic mass can be found in what part of the atom?
The nucleus
Which Greek scientist proposed the idea of "Atomos" a particle so small it was "uncuttable"?
Who is Democritus?
The sub atomic particle can be found in the nucleus and will not affect the charge of the atom
What is a neutron
energy levels
Must refer to the number of circles around the nucleus
(electrons is NOT correct)
If you take the atomic mass and subtract the atomic number what will the answer represent?
Which scientist used gold foil to determine there was a nucleus, protons, and empty space?
Ernest Rutherford
(last name gets full credit)
These are atoms of the same element that have different numbers of neutrons.
What is an isotope
Elements found within the same group have this in common:
similar traits/characteristics
What prompted Medeleev to create the periodic table?
He was a professor and he didn't like the text book he was working with.
Which of the following is NOT a part of John Dalton's Atomic Theory of Matter?
1. All elements are made from atoms
2. Atoms from the same element are the same
3. Atoms cannot be created nor destroyed
4. Atoms have the same number of neutrons as protons
4. Atoms have the same number of neutrons as protons
How many electrons can be found in the first 3 shells/levels of the electron cloud? Name the total number of electrons.
2 + 8 + 18 (partial credit) = 28 (full credit)
Which group of elements is the largest?
transition metals
(metals gets half credit)
Why is the atomic mass written as a decimal?
The atomic mass is the average of the neutrons and protons including isotopes (must include the word isotope for full points)
What is Niels Bohr known for?
creating a model of the electrons orbiting around the nucleus