For GCSE Chemistry it is vital that students have a good understanding of the periodic table. In this quiz we take a look at how the periodic table is organised into groups and periods, and also at some of the information we can get about elements from their position in the table. ...
Dmitri Mendeleev First Table made by arranging the 63 known elements in order of atomic weight grouping them by similarity of properties. Predicted the existence of new elements pointed out that some of the known atomic weights were wrong He left space on his table for new elements, and predict...
Atoms. Elements and Atoms Terms Matter is anything that has mass and takes up space. Elements are the simplest pure substance and they can not be. The Periodic Table The periodic table is a list of all the known elements arranged in Groups and Periods All the elements on the LH...
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Periodic table PART 2 – QuestionIT What happens to the reactivity of the elements as you go down Group 1? Write a word equation for the reaction between sodium and oxygen. Why do all the elements in Group 7 react in a similar way to each other? Halogens are diatomic. What does the ...