The chemical formula of calcium trioxocarbonate(iv) is
The valency of magnesium is
A balanced chemical equation obeys the law of
Which chemical equation is balanced among the following?
branch of chemistry deals with the study of natural products from plants and animals
What is the mass number of an element with 6 protons and 6 neutrons
The change of gas to solid is called
Scientifically acceptable general principle formulated to explain a phenomenon based on experimental evidence is called
Elements in the periodic table,that have the same number of electrons in its outermost shell are in the same?
Nitrogen is in group.......
In the periodic table,Elements that have the same number of shells are in the same........
Natural source of clean water that contains vital minerals is
An atom that is positively charged is called
The abbreviation used to represent chemical reactions is called
Elements known to be electron donors are called
The following are non metals except
