Which are the heaviest metals on earth? And what are their uses? Discover the metal that ranks heaviest based on density and ...

Consequently the oxide must have the formula InO3 and the atomic weight must be about 114. discrepances in the periodic table. It was already observed by Mendelejeff that a discrepancy exists in ...

In this periodic table of elements quiz, you have 10 minutes to name as many elements as you can, given only their symbol, ...

This year we celebrate the 150 th anniversary of Mendeleev’s achievement in formulating the structure of the periodic table that we use today. He announced his structure in 1869, but the challenge of ...

1. Convert kilograms/second to grams per second. 1 kg = 1000 grams. If the mass flowrate is 0.25 kilograms/second, convert this to 250 grams/second. 2. Convert grams to moles, using the molar mass of ...

All substances have properties. These describe how a subject looks and behaves. Substances have both physical and chemical properties. Developing the periodic table The periodic table was ...

Mrs Roberts: Not quite. So, today we're going to look at the periodic table. That thing that you see behind your teacher on the wall in science lessons. It actually tells us a lot about the ...