Vocab
What is the definition of an atom? (It doesn't have to be word for word)
The smallest particles of an element that retains the chemical properties of the element.
What is the definition of an atomic number?
The number of protons in the nucleus of an atom.
What is the definition of Malleable?
A characteristic of a metal that means it is bendable and easily shaped.
What is the definition of an element?
A substance is made up of one type of atom where a specific number of electrons exist.
What is the definition of an Atomic Mass?
The average mass number of atoms in a sample of an element.
A substance that only conducts electricity under certain conditions.
What is the definition of an electron shell?
A region around the nucleus of an atom where a specific number of electrons can exist.
What is the definition of a group?
A column of elements in the periodic table that have similar properties, electrons, configurations, and valencies
What is the definition of a nonmetal?
A class of elements that typically form negative ions; they are usually dull solids or gasses.
What are some of the characteristics of noble gases?
Noble gasses have an octet (meaning they have a full outer shell) in them unlike other gasses they are also called group 0, They are all montomic gasses obtained by fractional distillation of liquid air. They are not reactive because of their electron configuration. Fun Fact! Argon (one of the noble gases) forms 0.9% of the air while other noble gases occur in even smaller amounts! Noble gasses are also odorless, colorless, and not reactive.
What is the definition of a compound?
A substance that consists of a combination of different elements.
What is the definition of a Poor Metal?
A group of metals that are soft and weak.
What is the difference between a period and a group?
Group: They are in a column on the periodic table.
They have similar properties, electron configurations, and valencies. There is added one electron shell as you go down the column. There are 8 of them.
Period: They are horizontal on the periodic table.
They are a set of elements that have the same amount of electron shells. There are 7 of them going across.
What is the definition of a Period?
A set of elements that have the same amount of electron shells, shown as rows in the periodic table.
What is the definition of a Semimetal?
A group of elements that have characteristics of a metal that means it is bendable and easily shaped.
What is an octet in chemistry and why is it special?
An octet is an eight-electron outer shell only found in noble gases. The octet also makes most noble gases more stable than other gases.