1. Atoms of ______ elements or ______ elements join together to form compounds.
2. The combining power of an element is ________.
3.Relative atomic masses of all elements have been found with respect to an atom of oxygen-17.(True/False)
4. The molecular mass of sulphur molecule (atomicity8) is __________.
5. The elements present in baking soda are __________.
1. Atoms of ______ elements or ______ elements join together to form compounds.
2. The combining power of an element is ________.
3.Relative atomic masses of all elements have been found with respect to an atom of oxygen-17.(True/False)
4. The molecular mass of sulphur molecule (atomicity8) is __________.
5. The elements present in baking soda are __________.
The answers to the questions are as follows :
1) Atoms of an element or more than one elements join together to form compounds.
2) The combining power of an element is valency.
3) Relative atomic masses of all elements have been found with respect to an atom of oxygen-17.(True/False)
This is a false statement as the relative atomic masses of all elements have been found with respect to (1/12th) the mass of an atom of C-12 isotope.
4) The molecular mass of sulphur molecule (atomicity8) is 256 u.
5) The elements present in baking soda are sodium, hydrogen, carbon and oxygen (as the chemical formula of baking soda is NaHCO3).
The answers to the questions are as follows :
1) Atoms of an element or more than one elements join together to form compounds.
2) The combining power of an element is valency.
3) Relative atomic masses of all elements have been found with respect to an atom of oxygen-17.(True/False)
This is a false statement as the relative atomic masses of all elements have been found with respect to (1/12th) the mass of an atom of C-12 isotope.
4) The molecular mass of sulphur molecule (atomicity8) is 256 u.
5) The elements present in baking soda are sodium, hydrogen, carbon and oxygen (as the chemical formula of baking soda is NaHCO3).
