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WorksheetsAtomic Structure & Periodic Table
Total questions: 18
Worksheet time: 21mins
Which of these things did Mendeleev do?
Left gaps for undiscovered elements
Discovered electrons
Switched elements around so their properties fitted better
Ordered elements by colour
When Mendeleev organised the elements he started by ordering the elements by their atomic . . . .
(a)
Which of these atomic discoveries was the first:
Energy levels discovered
Electrons discovered
Nucleus discovered
Neutrons discovered
James Chadwick discovered . . . .
(a)
Explain how Rutherford's backscattering experiment led to a change in the accepted model of the atom
Starting with the earliest, which is the correct order of contributors to the atomic model?
Chadwick,
Bohr,
Rutherford,
JJ Thompson,
Dalton
JJ Thompson,
Rutherford,
Dalton,
Bohr,
Chadwick
Dalton,
JJ Thompson,
Rutherford,
Bohr,
Chadwick
Dalton,
Bohr,
JJ Thompson,
Rutherford,
Chadwick
What is the charge on a proton ?
0
-1
Negligible
+1
What is the mass of an electron?
-1
Negligible
1
What is an isotope?
Wjat is formed when an atom loses or gains electrons?
An ion
An element
A compound
An isotope
Which one of these electron configurations is not possible?
2,8,10
2,8,8
2,8,6
2,8,4
What is the maximum number of electrons the 1st (innermost) electron shell can hold?
8
2
16
An element with the electron configuration 2,8,8,1 is in:
Period 3 and group 1
Period 1 and group 4
Period 4 and group 1
Period 2 and group 1
State 3 properties of the elements in group 1
Which of the following elements would react differently to the others?
2,8,8,1
2,8,1
2,1
2,7
In group 7, the most reactive element is:
Chlorine
Bromine
Fluorine
Iodine
Explain why Neon is unreactive
Which TWO are properties of transition metals and NOT properties of group 1 metals?
Form coloured compounds
Low melting points
Very reactive
Useful as catalysts
