Chapter 2, Atoms, Ions, Conpounds Flashcards
Name the atom with one more proton and the same number of neutrons than an atom of K³⁹.
Calcium, Ca⁴⁰
²⁰
Name an ion with one more proton and two more neutrons than an atom of Ne²⁰ but the same amount of electrons.
Sodium Na+
What is the relative charge and mass of; proton, neutron, electron.
Proton +1, 1
Neutron 0, 1
Electron -1, 1/1836
What is the definition of an isotope?
Atom of the same element with the same number of protons but different number of neutrons.
What is the equation for relative isotopic mass?
(isotopic mass × abundance) ÷ 100
What is the definition of an ion?
A charged atom by gaining or losing electrons.
What is a cation?
Positive ion
What is an anion?
A negative ion
Give the formula for:
Carbonate Phosphate
Sulfate Ammonium
Nitrate Hydroxide
CO²- PO³-
³ ⁴
SO²- NH+
⁴ ⁴
NO‐ OH‐
³
Give the formula for sodium chloride
NaCl
Give the formula for aluminium oxide
Al O
² ³
Give the formula for magnesium nitrate
Mg(NO )
³ ²
When are cations formed?
When there are fewer electrons than protons
When are anions formed?
When there are more electrons than protons
Why does different isotopes of the same element react in the same way?
Neutrons don’t effect reactivity therefore there is no difference in reactivity.
Electrons will be in the same arrangement
