Atomic structure 1
The 2 parts of an atom.
What are the nucleus and the electron cloud?
The subatomic particles have the same mass (1 amu).
What are protons and neutrons?
Area of most volume in atom.
What are electrons in/on the energy levels/electron cloud?
A cathode ray is attracted to a + charged plate; therefore, the charge of the particles that make up the cathode ray must have this charge.
What is they are - charged?
How to figure out the # of neutrons in an atom.
What is the mass number - number of protons?
The 3 subatomic particles that make up an atom.
What are protons, neutrons, and electrons?
The charge of a proton.
What is (+) positive?
Overall electrical charge of the atomic nuclei of atoms.
What is positive?
The overall charge of the vast area or "cloud" around the atomic nuclei of atoms.
What is negative?
The name of the horizontal row on the Periodic Table.
What is a period?
The subatomic particle that determines the identity of an atom.
What are protons?
The charge of a neutron.
What is (no charge) neutral?
Ernest Rutherford discovered this in his gold foil experiment.
What is the atomic nucleus?
The atoms of an element that have the same number of protons but a different number of neutrons are named this.
What is an isotope?
Between, Ga, Sn, Zn, and Al, these 2 elements have similar chemical properties.
What are Ga (gallium) and Al (aluminum)?
These particle(s) is/are found is the nucleus.
What are protons and neutrons?
The charge of an electron.
What is (-)negative?
The number of neutrons in the atom Chromium-52.
What is 28?
How the # of protons in an atom are determined.
What is the atomic number?
The atomic number of tin (Sn).
What is 50?
The particle(s) is/are found in the vast empty space or "cloud" area in an atom.
What are electrons?
The part of the most mass of an atom.
What is the nucleus?
The number of neutrons in an atom of Iodine-127.
What is 74?
How to figure out the # of electrons in an atom.
What is the same as the # of protons?
The reason the atomic masses (of the naturally occurring elements) on the periodic table have decimals.
What is they are a weighted average atomic mass of all the isotopes of that element?