Acids & Bases: Atoms and Ions Flashcards
Where are metals found in the Periodic table?
Left hand side and the middle.
Where are non-metals found in the Periodic table?
Right hand side
What are the three sub-atomic particles that make up an atom?
Protons, neutrons and electrons
What do we call the outer electron shell around an atom?
Valence shell
How many electrons can the first energy level/ shell hold?
Two / 2
How many electrons can the second energy level/ shell hold?
Eight / 8
How many electrons can the third energy level/ shell hold?
Eight / 8
(rule holds @ Level 1, NCEA)
What is the charge of a Proton?
Positive
What is the charge of an electron?
Negative
What is the charge of a neutron?
No charge / neural
An atom has 6 electrons; how many protons will it have?
Six / 6
What does the mass number of an atom tell you?
The number of protons and neutrons.
What does the atomic number tell you about an atom?
The number of protons and electrons an atom has.
Looking at an Atomic symbol for X; what does the notation A tell you about X where A is the smaller number?
A is the atomic number of X
How many protons and electrons X has.
Looking at an Atomic symbol for X; what does the notation Z tell you about X where A is the smaller number?
Z is the mass number of the atom
Looking at an Atomic symbol for X; what will you discover by subtracting A from Z where A is the smaller number.
The number of neutrons atom X has
In the notation below, what is X?
The symbol for the element.
What do we call atoms which have the same number of protons but different mass numbers?
Isotopes
What are these C atoms an example of for Carbon?
Isotopes
How are these Cl atoms different from each other?
They have a different number of neutrons which we know because the mass number is different.
Use the number form to explain the electron arrangement of Aluminium
2 , 8 , 3
The elements of the Periodic table as listed in order of increasing what?
Atomic number
When an atom gains or loses an electron/s it becomes a what?
Ion
What is the ionic formula for calcium chloride?
CaCl2
When metal and non-metals ions combine the form an orderly structure. What is this arrangement called?
Crystal lattice
What is the chemical name of NaCl?
Sodium chloride