Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
27 Cards in this Set
- Front
- Back
|
What's the relative mass and charge of a proton? |
Mass = 1. Charge = +1. |
|
|
What's the relative mass and charge of an electron? |
Mass = 0. Charge = -1. |
|
|
What's the relative mass and charge of a neutron? |
Mass = 1. Charge = 0. |
|
|
Where are electrons found in atoms? |
Electrons are found in principle energy levels outside the nucleus. |
|
|
What is an element made of and how many occur naturally? |
An element is made up of one sort of atom; there are about 92 naturally occurring elements. |
|
|
Which three sub-atomic particles make up an atom? |
Protons, electrons and neutrons. |
|
|
Which sub-atomic particles are found in the nucleus? What can they also be referred to as? |
Protons and neutrons. They can also be called nucleons. |
|
|
What is the atomic number of an element? |
The atomic number is the number of protons in an atom of an element. Can also be called proton number. |
|
|
What is the mass number of an element? |
The mass number is the total number of protons and neutrons in an atom of an element. |
|
|
How do you calculate the number of neutrons of an atom? |
Mass number - Atomic Number. |
|
|
Define the term isotope. |
Isotopes are atoms of the same element with the same number of protons (atomic number) but a different number of neutrons (mass number). |
|
|
What is the relative atomic mass given in the periodic table? |
The relative atomic mass is the average of the mass numbers of different isotopes of an element. |
|
|
Do isotopes have different or similar chemical properties? |
Isotopes have the same chemical properties because they have the same electronic configuration. |
|
|
Do isotopes have different or similar physical properties? |
Isotopes have different physical properties (melting points, boiling points) because they have different mass numbers. |
|
|
How many electrons are their on the nth principle energy level? |
There are 2n^2 electrons on the nth principle energy level. |
|
|
What can principle energy levels be divided into? |
Principle energy levels can be divided into sub-levels. |
|
|
What are the sub-levels, in order of increasing energy? |
s -> p -> d -> f |
|
|
What are sub-levels divided into? |
Sub-levels are divided into orbitals. |
|
|
How many electrons can an orbital hold? |
An orbital can hold 2 electrons. |
|
|
How many orbitals does the s sub-level have? |
1 orbital (2 electrons) |
|
|
How many orbitals does the p sub-level have? |
3 orbitals (6 electrons) |
|
|
How many orbitals does the d sub-level have? |
5 orbitals (10 electrons) |
|
|
How many orbitals does the f sub-level have? |
7 orbitals (14 electrons) |
|
|
Which sub-levels are in the first principle energy level and what is the maximum number of electrons? |
Sub-levels: s Max number of electrons: 2 |
|
|
Which sub-levels are in the second principle energy level and what is the maximum number of electrons? |
Sub-levels: s, p Max number of electrons: 8 |
|
|
Which sub-levels are in the third principle energy level and what is the maximum number of electrons? |
Sub-levels: s, p, d Max number of electrons: 18 |
|
|
Which sub-levels are in the fourth principle energy level and what is the maximum number of electrons? |
Sub-levels: s, p, d, f Max number of electrons: 32 |
