Subatomic Particles
Where is the proton located and what charge does it have?
In the nucleus, +1
Who discovered the nucleus?
Rutherford
Which group is described here: soft, silvery, reactive metals, all of each have one valence electron.
Alkali Metals
What type of elements are anions?
Non-metals
What is the term used for the same element but it has a different number of electrons?
Ion
Where is the electron located and what charge does it have?
Electron cloud and -1
Who discovered the electron?
J. J. Thomson
What is the name of Group 2?
Alkaline Earth Metals
What is a cation?
A positively charged ion, loses electrons
What is the term used for two elements that are the same but have different masses?
Isotopes
Where is the neutron located and what charge does it have?
Who discovered the neutron?
James Chadwick
Name an element in the Halogens family?
Anything in Group 17
What type of ion is O-2?
Anion
What is the difference between Carbon-12 and Carbon-13?
What two particles make up the mass of an atom?
the protons and neutrons
What experiment was used to find the nucleus?
The gold-foil experiment
What are two characteristics of metalloids?
Semiconductors, brittle, solid at room temperature
How to do you easily figure out how many valence electrons an element has?
The second number of the group number
What does valence refer to?
Outermost
What is the top number on the periodic table and what does it refer to?
Atomic number and number of protons
What atomic theory refers to the unpredictability of electrons?
Quantum Mechanical Model
Why are the noble gases so unreactive?
They already have 8 electrons in their orbitals.
How many valence electrons does Nitrogen have? What ion would it make?
N has 5 valence electrons, it needs 3.
N-3
List all the diatomic elements.
N2, H2, F2, O2, I2, Cl2, Br2