Chemistry Basic Concept

A. Empirical formula
B. Molecular mass
C. Molecular formula
D. Formula mass

A. identification of elements
B. estimation of amounts of elements
C. molar ration of elements
D. molar volume of elements

A. they possess different mass number
B. they possess different physical properties
C. they possess same chemical properties
D. they possess different position in the periodic table

A. 1.008 mg
B. 0.184 mg
C. 0.054 mg
D. 5.4 mg

A. arsenic
B. uranium
C. iodine
D. nickel

A. relative atomic mass
B. mass number
C. atomic weight
D. relative isotopic mass

A. Atomicity
B. Shape of molecule
C. Both A and B
D. Difficult to predict

A. volume of particles
B. number of particles
C. mass of particles
D. All of the above

A. Gas
B. Liquid
C. Volatile solid
D. All

A. Uni-negative
B. Uni-positive
C. Di-negative
D. Di-positive