Chapter 2 Test Flashcards
Ion
an atom or group of atoms that carries a positive or negative electric charge as a result of having lost or gained one or more electrons
Ionization Energy
Measured how hard it is to remove a valence electron from an atom of that element
What is the equation for finding out the amu (mass)?
Protons + Neutrons
What is the equation for finding the electrical charge?
Protons - Electrons = overall charge
Does atomic mass increase through groups and periods?
Yes
Does ionization energy increase through groups and periods?
It increases across a period and decreases down a group.
What are the three name subatomic particles?
Neutrons, protons, and electrons
Do stable elements react?
Stable elements do not react
Which shells that an electron is in influences chemical reactions?
The outer shells affect reactivity, the inner shells do not affect reactivity.
Which groups are the most reactive?
Group 1 and group 17 because one is easily lose an electron and the other can gain one electron to become a noble gas.
An atom is a tiny sphere of two or three types of smaller particles
True
Each element has a name, a number, and a symbol to represent it
True
Elements in the same group have the same number of valence electrons
True
The nucleus of the atom is a sphere
True
The nucleus of the atom is the most massive part of an atom
True
