General Organic Biological Chemistry 66 Questions With Correct Answers

General, Organic, & Biological Chemistry |66
Questions| With Correct Answers.

1). Who is credited to the discover of atoms?

 Ans: John Dalton and Democritus (Greek Philosopher)


2). Can atoms be divided?

 Ans: no


3). Where are protons found?

 Ans: in the nucleus


4). Where are electrons found?

 Ans: Outside the nucleus


5). Where are neutrons found?

 Ans: in the nucleus


6). What is the ratio from a proton to an electron?

 Ans: 1/2000


7). What charge do protons have?

 Ans: +


8). What charge to electrons have?

 Ans: -


9). What charge to neutrons have?



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,  Ans: none


10). What is the atomic number?

 Ans: The number of protons in the atom's nucleus


11). What is the mass number?

 Ans: The total number of protons and neutrons in the nucleus of an atom


12). What are isotopes?

 Ans: Atoms of a particular element that have a different number of neutrons.

Same atomic number, different mass number


13). Atomic weight

 Ans: refers to the average mass of the atoms in a naturally occurring sample of the
element


14). What dietary deficiency can causes rickets?

 Ans: A calcium deficiency


15). Cation

 Ans: Positive ion (usually metals)


16). Anion

 Ans: Negative ion (usually nonmetals)


17). Define element

 Ans: A substancce that contains only one type of atom




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