Foundations Of Chemistry Flashcards
Where is the proton in the atom?
Nucleus
Where is the neutron in the atom?
Nucleus
Where is the electron in the atom?
Shells/energy levels
What is the relative mass of a proton?
1
What is the relative mass of a neutron?
1
What is the relative mass of an electron?
Negligible or 1/1836
What is the relative charge of a proton?
+1
What is the relative charge of a neutron?
0
What is the relative charge of an electron?
-1
How do you know the number of shells in an atom from the periodic table?
Period number
How do you know the number of electrons in the outer shell of an atom from the periodic table?
Group number
What is the atomic number?
Number of protons
What is the mass number?
Number of protons and neutrons
How do you know the number of electrons in an atom from the periodic table?
Atomic number
How do you know the number of neutrons in an atom from the periodic table?
Mass number - atomic number
Meaning of isotopes
Atoms of the same element with the same number of protons but different numbers of neutrons
Meaning of relative atomic mass
The average mass of all the isotopes of an element taking into account the abundance of each isotope measured relative to ¹/₁₂ of the mass of an atom of ¹²₆ C
Symbol for relative atomic mass
Ar
How do you calculate relative atomic mass?
‘abundance 1’ x ‘mass 1’ + ‘abundance 2’ x ‘mass 2’ (etc.) /100
What is the charge of silver?
Ag+
What is the charge of copper?
Cu2+
What is the charge of iron?
Fe3+
What is the charge of lead?
Pb2+
What is the charge of zinc?
Zn2+
