Chemistry - 9 Chapter - 3
Atomic Structure
Test - 13

1. Atoms of an element always have same atomic mass?


2. According to modern research, all atoms of an element are identical.


3. Many elements have two or more than two types of atoms?


4. The number of ________present in the atoms of an element remains the same, where, as number of ____ may be different.




5. Atomic number is equal to number of protons.


6. Atomic mass is equal to protons + neutrons.


7. Atoms of an element always have same atomic mass.


8. The word isotope was first suggested by __________.




9. In Greek language isos means ______ and "topes" means ______.




10. Different isotopes show different chemical properties.


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