Chemistry Flashcards
(10 cards)
What happens to an electron at high heat?
It gets excited and is promoted from its ground state to higher orbitals, energy is given out as it cools and falls back down
What shape is a p-orbital?
A dumbbell
What is ionisation energy?
Measure of minimum energy needed to pull an electron away from the attraction of the nucleus in a gaseous state (kJmol-1)
What is electron affinity?
The minimum energy released when 1 mol of electrons is added to 1 mol of atoms in a gaseous state (kJmol-1)
What is the atom economy of an experiment in which only 1 product is formed?
100%
What is the equation for atom economy?
(mass of atoms in desired product / mass of atoms in reactants ) x 100
What is an orbital?
The 3D region of space where an electron is likely to be found
What is Avogadro’s number?
6.022 x 10^23
How many atoms are there in calcium oxide?
2 ( Ca and O)
What is the unit for Mr?
gmol-1
