Chemistry Basics Quiz: Essentials of Stoichiometry & Structure

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Core concepts and theory (no pure calculations)

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Daisy Cedillo

United States

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Chemistry Basics Quiz: Essentials of Stoichiometry & Structure


Froggy Jumps Chemistry Basics Quiz: Essentials of Stoichiometry & StructureVersion en ligne Core concepts and theory (no pure calculations) par Daisy Cedillo 1 Which unit is the SI base unit for mass? a Grams (g) b Kilograms (kg) c Pounds (lb) 2 What is the metric base unit for length? a Meters (m) b Centimeters (cm) c Liters (L) 3 Which statement is true about density units? a Density is volume per mass b Density is mass per volume (g/mL or g/cm3) c Density has no unit 4 What is the correct SI unit for volume in the metric system? a Cubic centimeters (cm3) b Liters (L) c Cubic meters (m3) 5 Are leading zeros significant in sig figs? a Never significant b Sometimes significant c Always significant 6 Are captive zeros significant in sig figs? a Never significant b Only sometimes significant c Always significant 7 Are trailing zeros significant if there is no decimal point? a Not significant b Always significant c Always significant if above 100 8 What is the meaning of an isotope? a Atoms with different protons b Atoms of the same element with different neutron numbers c Different elements with the same mass 9 What does the average atomic mass account for? a Fractional abundances of isotopes b Only the most abundant isotope mass c Total protons in nucleus 10 Which sublevel can hold a maximum of 6 electrons? a d subshell b p subshell c s subshell 11 How many orbitals are in the 4d subshell? a 4 orbitals b 6 orbitals c 5 orbitals 12 What is the correct Lewis dot count for a main-group element with 3 valence electrons? a 0 dots b 6 paired dots c 3 unpaired dots 13 What is the charge of a neutral atom’s nucleus? a -1 b +1 c 0 net charge overall 14 What is an ionic bond? a Hydrogen bonding only b Sharing electrons between nonmetals c Transfer of electrons from metal to nonmetal 15 What is a covalent bond? a Sharing of electron pairs b Transfer of electrons c Ionic attraction only 16 What is a polar covalent bond? a Equal sharing of electrons b Complete transfer of electrons c Unequal electron sharing due to electronegativity difference 17 What is a nonpolar covalent bond? a Unequal sharing of electrons b Equal sharing of electrons c Ionic bond formation 18 Which group contains the alkali metals? a Group 1 (IA) b Group 17 (VIIA) c Group 2 (IIA) 19 Which term describes a solution that conducts electricity due to dissociated ions? a Electrolyte b Non-electrolyte c Colloid 20 What formula represents molar mass? a Volume per mole (L/mol) b Mass per mole (g/mol) c Moles per liter (mol/L) 21 What is the Arrhenius definition of an acid? a Substance that accepts protons b Substance that produces H+ in water c Substance that donates hydroxide 22 What is the Arrhenius definition of a base? a Substance that forms acids in solution b Substance that donates H+ c Substance that produces OH- in water 23 What is the pH scale related to? a Oxygen concentration b Hydrogen ion concentration c Carbon dioxide pressure 24 What is the correct naming convention for a binary ionic compound with a main-group metal? a Use Roman numerals for charge b Name as is (e.g., magnesium chloride) c Add -ide to metal name 25 When naming transition metal ionic compounds, what is added to indicate charge? a Prefix numbers before the metal b Suffix -ate to the metal c Roman numeral for the metal’s oxidation state 26 What prefix is used in covalent compound naming to indicate one atom of the first element? a Di- b Tri- c Mono- (not used for the first element) 27 What suffix ends an oxyacid with -ate in its polyatomic ion? a -ous acid b -ic acid c -ate acid 28 Which geometry corresponds to a linear molecular shape? a 3 bonds, 1 lone pair b 2 bonds, 0 lone pairs c 4 bonds, 0 lone pairs 29 Which statement best describes a buffer solution? a Cannot buffer strong acids b Resists pH changes when acids/bases are added c Causes pH to spike 30 What does the pOH measure? a Total ionic strength b Hydrogen ion concentration c Hydroxide ion concentration 31 Which gas law requires temperature in Kelvin? a Charles’ Law b Boyle’s Law c Ideal Gas Law 32 What does osmosis describe? a Gas diffusion b Solvent movement toward higher solute concentration c Solute diffusion 33 What is the primary unit of molarity? a Moles per liter (mol/L) b Mass per volume (g/L) c Moles per cubic meter (mol/m3) 34 What does a net ionic equation show? a Only species that change state/charge b All spectator ions included c All reactants always present 35 What is the difference between soluble and insoluble? a Solubility rules determine what dissolves b Solubility is constant for all salts c Only temperature affects solubility 36 What is the formula for the name given: Mg and P together form a compound? a Mg2P3 b Mg3P2 c MgP 37 Which type of reaction forms a salt and water? a Neutralization (acid + base) b Combustion c Precipitation 38 In a balanced equation, what does the coefficient in front of O2 adjust? a The reaction temperature b The catalyst used c The amount of O2 needed for balance 39 Which term describes the ability of a substance to donate or accept electrons in redox? a Electrolytes b pH c Oxidation numbers 40 What is the basic unit for atmospheric gas pressure in the ideal gas law? a Pressure (P) b Volume (V) c Moles (n) 41 What does a polar molecule imply about its geometry? a Asymmetrical geometry with dipoles not canceling b Symmetrical geometry with cancellation c No dipoles present 42 Which statement about sig figs is correct when multiplying/dividing? a Always the most precise value is kept b Always infinite sig figs c Result has as many sig figs as the input with the fewest total sig figs 43 Which quantity remains always in Kelvin in temperature conversions? a Fahrenheit b Temperature c Celsius 44 What is a diatomic molecule? a Molecule with two different elements b Molecule with more than two atoms c Molecule composed of two atoms 45 What is the correct shorthand electronic configuration for chlorine? a [Ne] 3s2 3p6 b [Ar] 4s2 3d10 c [Ne] 3s2 3p5 46 What is the main determinant of valence electrons in main-group elements? a Group number b Atomic mass c Period number 47 What is the pH of a solution with H+ concentration 6.1 x 10^-3 M? a 7.00 b Approximately 2.21 c 11.00 48 What is the name of H2SO3? a Sulfuric acid b Hypochlorous acid c Sulfurous acid 49 What is the correct name for the acid HC2H3O2? a Hydrocyanic acid b Acetic acid c Formic acid 50 What is the definition of osmolarity? a Number of particles per formula unit b Energy per mole c Molarity times volume 51 What is the acid-base reaction type that forms salt and water? a Neutralization b Combustion c Precipitation 52 How many diatomic molecules are commonly taught in chemistry? a 8 b 5 c 7 53 What is the molecular formula mass of C2H6O2? a Depends on temperature b Wording not a calculation question c Cannot determine 54 Which state best describes the difference between a strong acid and strong base in water? a Both fully dissociate b Only weakly dissociate c Neither dissociates in water 55 What is the correct name for the ion SO4^2-? a Sulfite b Sulfide c Sulfate

Chemistry Basics Quiz: Essentials of Stoichiometry & Structure

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Chemistry Basics Quiz: Essentials of Stoichiometry & StructureVersion en ligne

par Daisy Cedillo

Which unit is the SI base unit for mass?

What is the metric base unit for length?

Which statement is true about density units?

What is the correct SI unit for volume in the metric system?

Are leading zeros significant in sig figs?

Are captive zeros significant in sig figs?

Are trailing zeros significant if there is no decimal point?

What is the meaning of an isotope?

What does the average atomic mass account for?

Which sublevel can hold a maximum of 6 electrons?

How many orbitals are in the 4d subshell?

What is the correct Lewis dot count for a main-group element with 3 valence electrons?

What is the charge of a neutral atom’s nucleus?

What is an ionic bond?

What is a covalent bond?

What is a polar covalent bond?

What is a nonpolar covalent bond?

Which group contains the alkali metals?

Which term describes a solution that conducts electricity due to dissociated ions?

What formula represents molar mass?

What is the Arrhenius definition of an acid?

What is the Arrhenius definition of a base?

What is the pH scale related to?

What is the correct naming convention for a binary ionic compound with a main-group metal?

When naming transition metal ionic compounds, what is added to indicate charge?

What prefix is used in covalent compound naming to indicate one atom of the first element?

What suffix ends an oxyacid with -ate in its polyatomic ion?

Which geometry corresponds to a linear molecular shape?

Which statement best describes a buffer solution?

What does the pOH measure?

Which gas law requires temperature in Kelvin?

What does osmosis describe?

What is the primary unit of molarity?

What does a net ionic equation show?

What is the difference between soluble and insoluble?

What is the formula for the name given: Mg and P together form a compound?

Which type of reaction forms a salt and water?

In a balanced equation, what does the coefficient in front of O2 adjust?

Which term describes the ability of a substance to donate or accept electrons in redox?

What is the basic unit for atmospheric gas pressure in the ideal gas law?

What does a polar molecule imply about its geometry?

Which statement about sig figs is correct when multiplying/dividing?

Which quantity remains always in Kelvin in temperature conversions?

What is a diatomic molecule?

What is the correct shorthand electronic configuration for chlorine?

What is the main determinant of valence electrons in main-group elements?

What is the pH of a solution with H+ concentration 6.1 x 10^-3 M?

What is the name of H2SO3?

What is the correct name for the acid HC2H3O2?

What is the definition of osmolarity?

What is the acid-base reaction type that forms salt and water?

How many diatomic molecules are commonly taught in chemistry?

What is the molecular formula mass of C2H6O2?

Which state best describes the difference between a strong acid and strong base in water?

What is the correct name for the ion SO4^2-?