Atoms
The smallest particle of matter that cannot be broken down by chemical means.
What is an Atom?
Protons, neutrons and electrons.
Which is the atom made of?
Groups
What are the columns in the periodic table called?
Group 1
Where are the Alkali metals located?
A substance that contains only one type of atom.
What is an Element?
Protons.
Which particles are positively charged?
Periods
What are the rows in a periodic table calle?
Earth Alkali Metals
What are the elements in Group 2 called?
Protons and Neutrons
What does the nucleus of an Atom contain?
The sum of protons and neutrons.
How do you calculate the atomic mass?
By their atomic number.
How are elements organised in the periodic table?
Fluorine, Chlorine, Bromine, Iodine, Astatine
Which are the Halogens?
By adding or removing electrons.
How are ions created?
What is considered a full outer shell?
The number of electron shells.
What does the period number determine?
6 electrons.
How many electrons are in the outer shell of the elements of Group 16?
Isotopes.
What are atoms with different number of neutrons called?
The electrons in the outermost shell.
What are valence electrons?
The elements on the left side of the periodic table.
Where are the metals located on the periodic table?
They have a full valence shell and do not react.
Why are the elements in group 18 called noble gases or inert gases?