Question 1

Which subatomic particle has a mass of approximately 1.0073 amu and a positive charge?

Accepted Answer

Proton

Question 2

What is the atomic number ($Z$) of an atom with 18 protons, 22 neutrons, and 18 electrons?

Accepted Answer

$Z = 18$

Question 3

Calculate the number of neutrons in $^{81}_{35}Br$.

Accepted Answer

46

Question 4

Which of the following best describes an isotope?

Accepted Answer

Atoms with the same number of protons but different numbers of neutrons

Question 5

Given the abundances and masses: $^{12}C$ (98.93%, 12.00000 amu) and $^{13}C$ (1.07%, 13.00335 amu), calculate the average atomic mass of carbon.

Accepted Answer

$12.01$ amu

Question 6

Which group in the periodic table contains the noble gases?

Accepted Answer

Group 8A

Question 7

Which two elements from the following list would you expect to show the greatest similarity in chemical and physical properties: B, Ca, F, He, Mg, P?

Accepted Answer

Ca and Mg

Question 8

What is the empirical formula for a compound with the molecular formula $C_2H_4$?

Accepted Answer

$CH_2$

Question 9

Which of the following is a diatomic molecule?

Accepted Answer

$N_2$

Question 10

If an atom loses two electrons, what is the resulting charge?

Accepted Answer

$2^+$

Question 11

What is the formula for the ionic compound formed between magnesium and nitrogen?

Accepted Answer

$Mg_3N_2$

Question 12

Which of the following compounds is molecular?

Accepted Answer

$N_2O_4$

Question 13

What is the name of $FeCl_3$?

Accepted Answer

Iron(III) chloride

Question 14

Which of the following ions is a polyatomic anion?

Accepted Answer

$SO_4^{2-}$

Question 15

What is the correct name for $H_2SO_4$?

Accepted Answer

Sulfuric acid

Question 16

What is the formula for ammonium dichromate?

Accepted Answer

$(NH_4)_2Cr_2O_7$

Question 17

Which prefix is used to indicate five atoms in a binary molecular compound?

Accepted Answer

penta-

Question 18

What is the name of $C_2H_5OH$?

Accepted Answer

Ethanol

Question 19

Which of the following is the correct formula for silver sulfate?

Accepted Answer

$Ag_2SO_4$

Question 20

Which of the following is a correct statement about the periodic table?

Accepted Answer

Elements in the same group have similar chemical properties.

Atomic Structure, Periodic Table, Chemical Formulas, and Nomenclature: General Chemistry Study Notes

Study Guide - Practice Questions