Chemical Changes & Structure: Periodic tabel Flashcards
What does the top number in Nuclide Notation stand for?
The top number of the Nuclide Notation stands for the mass.
What does the bottom number on nuclide notation stand for?
The bottom number of the nuclide notation stands for the atomic number.
What is the ‘RAM’ and where can you find it?
The ‘RAM’ is the Relative Atomic Mass, it tells use the average mass of an element.
This can be found on page 7 of the data-booklet.
How many types of atoms is an element made up of?
An element is only made up of 1 type of atom.
What are rows and columns known as on the periodic table?
Rows are known as ‘Periods’ and columns are known as ‘Groups’.
Why do elements in the same group have similar chemical properties?
Because they have the same number of outer electrons.
What is group 1 of the periodic table known as and what is it’s reactivity?
The alkali metals, they are very reactive.
What is group 7 on the periodic table known as and what is it’s reactivity?
The Halogens, they are very reactive.
What is group 0 known as on the periodic table and what is it’s reactivity?
The Noble gases, they are very unreactive.
What is the mass, charge and location of Electrons in the Atom?
Mass = **Negligible** Charge = **1-** Location = **energy levels** (outside the nucleus)
What is the mass, charge and location of Protons in the Atom?
Mass = **1amu** charge = **1+** Location = **nucleus**
What is the mass, charge and location of Neutrons in the Atom?
Mass = **1amu** Charge = **No charge** Location = **Nucleus**
How many electrons do the first 3 energy levels hold?
The first energy level holds 2 electrons, the second and third hold 8 electrons.
What does the atomic number tell us?
The atomic number tells us how many protons and electrons are in an atom. (Remember: A = P = E)
How can we find the mass of an atom?
Atomic number + number of Neutrons.
(Remember: M = A + N)
