MEDIUM
AS and A Level
IMPORTANT
Earn 100
Draw a labelled diagram to show the structure of a calcium atom.
Important Questions on Electrons in Atoms
EASY
AS and A Level
IMPORTANT
What prefixes do you know that can be placed before the basic unit and what is their relationship to the basic unit ? For example, a centimetre (cm) is one-hundredth of a metre (m).
EASY
AS and A Level
IMPORTANT
Practise writing units in standard form,e.g becomes (the negative 3 shows that the is the divisor).Try changing the following into the standard form:
EASY
AS and A Level
IMPORTANT
Practice writing units in standard form,e.g becomes (the negative 3 shows that the is the divisor). Try changing the following into the standard form:
MEDIUM
AS and A Level
IMPORTANT
Why must the specimens studied using an electron microscope have a dry surface ?
MEDIUM
AS and A Level
IMPORTANT
Why might it be useful to be able to look at a substance in more detail ?
EASY
AS and A Level
IMPORTANT
Write the simple electronic configuration of the following atom, showing the principal quantum number shells only.
Sulphur; The atomic number of sulphur,
EASY
AS and A Level
IMPORTANT
Write the simple electronic configuration of the following atom, showing the principal quantum number shells only.
Magnesium; The atomic number of Magnesium,
EASY
AS and A Level
IMPORTANT
Write the simple electronic configuration of the following atom, showing the principal quantum number shells only.
Fluorine; The atomic number of Fluorine,
