Question Magnesium and calcium are in group 2 of the periodic table. They are less reactive than the metals in group 1. Calcium reacts with water to form calcium hydroxide, Ca (OH) 2, and hydrogen ...

Question types will include multiple choice, structured, mathematical and practical questions. Part of Chemistry (Single Science) Atomic structure and the periodic table ...

If this sounds like a silly question, spare a thought for the 39 students who had to answer it as part of a university-level chemistry exam earlier this year. It’s easy to imagine the surprise ...

Get extra questions (with answers) for Class 10 Science Chapter 5 Periodic Classification of Elements. Check these important NCERT based questions to prepare for your upcoming board exam.

The Periodic Table: Its Story and Its Significance by Eric R. Scerri, Oxford University Press, 2007, 368 pages, $35 hardback (ISBN 13 978-0-19-530573-9) ...

The periodic table is a public symbol of chemistry. But as it grows larger, we must stress that science is not just about producing lists, says Philip Ball.

The 'cosmic origins' periodic table that reveals where every element came from An astronomer has re-created a periodic table listing the origin of each element Hydrogen makes up most of the ...

It seems as if the makeup of the periodic table would be as rudimentary as apples falling down, not up. There’s evidence for elements like oxygen, iron, and silicon all around.