Chem Flashcards
To learn (15 cards)
What is an Atom?
Building blocks that make up matter
What is an Atomic Number?
Number of Protons
What is the Mass Number?
Protons + Neutrons
What are the three Sub-Atomic Particles?
Protons, Neutrons & Electrons
What is the electronic configuration for Arsenic? (As)?
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p3
What is a period?
Number of Electrons shells/orbit (a row across horizontally).
What is a group?
Number of Shells (A column vertical down)
What are isotopes
It has the same no. of protons, different number of neutrons
is the electronic configuration of Calcium (Ca)?
1s2 2s2 2p6 3s2 3p6 4s2
State an example of a chemical change
Effervescence, new product, light or heat product, or colour change.
State an example of a physical property
State change or shape change
What is electronegativity
How strong an atom holds its electron
what is ionisation energy
The energy needed to take/remove a n electron.
What is the atomic radii
Its the total distance from the atom’s nucleus to the outermost orbital of electrons.
