3.2 Atoms Introduction
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What is the relative charge of a proton and the relative mass
+1 1.000
What is the relative charge of a neutron and relative mass
0 1.000
What is the relative charge of an electron and the relative mass
-1 0.0005
What does the top number of an element represent
mass number- number of protons and neutrons
What does the bottom number represent
Atomic mass number- Number of protons which is equal to the number of electrons
What is the definition of an isotope
Atoms with the same number of protons but different number of neutrons
What is the equation for Relative Atomic Mass (RAM)
(Mass X Abundance) + ( Mass x Abundance)/ Total abundance
How many does the first shell hold in an electron arrangement
2
How many does the second shell hold in an electron arrangement
8
What does the group number tell us
the number of electrons in the outer shell
What does the period tell you
The number of occupied shells
in an ionic compound what are the ions arranged in
A Giant Lattice
What is the definition of ionic bonding
very strong electrostatic attraction between oppositely charged ions (positive and negative ions)
why do ionic bonds have a high melting point
VERY Strong bonds In a giant Lattice breaking all the ionic bonds requires a lot of energy
In a solid can they conduct electricity if so why
no they can not ions are not free to move
In a liquid can they conduct electricity if so why
yes ions can move freely