Leaving Cert Chemistry Periodic Table: The following scientists all pla

Question

The following scientists all played a part in the development of our knowledge of elements.

Boyle
Mendeleev
Mosley
The Greeks
Davy

Write in your answer book the name corresponding to each of the numbers from 1 to 5 in the statements below.

It was thought by 1 __________ that matter was made up of four elements: earth, air, fire and water. In the 17th century 2 __________ defined an element as a simple substance that cannot be split into simpler substances. Early in the 19th century the elements, sodium and potassium, were isolated by 3 __________. Later in the 19th century the known elements were arranged in a table by 4 __________. In the 20th century the table of the elements was modernised as a result of the discovery of atomic number by 5 __________.

The following scientists all played a part in the development of our knowledge of elements - Leaving Cert Chemistry - Question c - 2012

Worked Solution & Example Answer:The following scientists all played a part in the development of our knowledge of elements - Leaving Cert Chemistry - Question c - 2012

It was thought by 1 __________

In the 17th century 2 __________

were isolated by 3 __________

by 4 __________

by 5 __________

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