Chem Final Review

60) In which type of reaction does a single reactant break up to form more than one product? a) Decomposition b) Combustion c) Synthesis d) Single Replacement

a) Decomposition

34) Which element is located in group 8A (also known as Group 18) and period 4? a) Krypton b) Iron c) Argon d) Xenon

a) Krypton

Which of these nonmetals is not reactive at all? a) Neon b) Fluorine c) Phosphorus d) Chlorine

a) Neon

What are the products of the reaction between Nickel (II) Chloride and Potassium Phosphate? a) Ni3(PO4)2 and KCl b) NiPO4 and KCl c) NiK and ClPO4 d) Ni3P2 and ClK

a) Ni3(PO4)2 and KCl

Which of the following instances with water is an example of a chemical change? a) Performing electrolysis, in which the water is converted into H2 and O2 gases b) Heating the water to its boiling point c) Placing the water in a freezer until it reaches its freezing point d) Dissolving a couple grams of sodium chloride into it

a) Performing electrolysis, in which the water is converted into H2 and O2 gases

An atom of which element has the following electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d7 a) Rh b) Co c) Pd d) Ru

a) Rh

Neon has 3 isotopes. What is the difference between the 3 isotopes? a) all 3 have the same # of protons but different # of neutrons b) all 3 have the same # of neutrons but different # of protons c) all 3 have the exact same mass numbers, but the # of electrons are different d) Nothing is different between the 3 isotopes

a) all 3 have the same # of protons but different # of neutrons

The density of concentrated hydrochloric acid is 1.18 g/ml. If you were to measure 100. ml of this acid, how many grams would this be equivalent to? a) 0.0018 g b) 118g c) 7.6 g d) 84.7 g

b) 118g

How many protons & electrons are in the sulfide ion, S^2-? a) 16 protons, 16 electrons b) 16 protons, 18 electrons c) 18 protons, 16 electrons c) 16 protons, 14 electrons

b) 16 protons, 18 electrons

How many valence electrons are in a molecule of PCl3? a) 7 b) 26 c) 66 d) 22 e) none of the previous

b) 26

30) How many valence electrons are in an atom of Fluorine? a) 9 b) 7 c) 19 d) None of the previous

b) 7

What is the charge on the NUCLEUS in #20 above? a) 6+ b) 6- c) 12+ d) No Charge

a) 6+

What is the formula for Silver Carbonate? a) Ag2CO3 b) AgCO3 c) AgC d) Ag(CO3)2

a) Ag2CO3

36) Which of the following atoms has the largest atomic radius? a) Arsenic b) Sulfur c) Fluorine d) Helium

a) Arsenic

Which scientist theorized that atoms had energy levels? a) Bohr b) Rutherford c) Dalton d) Thomson

a) Bohr

Why does an atom of chlorine gain 1 electron in order to become the chloride ion (Cl1-)? a) Gaining 1 electron leaves it with a full outer shell of electrons, like Argon b) Gaining 1 electrons means its outer shell has lost all of its electrons c) It doesn't...it loses 7 electrons to form Cl7+ so that it's like Neon d) Because chlorine's electronegativity value is extremely low, so it does not attract electrons

a) Gaining 1 electron leaves it with a full outer shell of electrons, like Argon

51) What type of bond forms between a metal & a nonmetal? a) Ionic b) Covalent c) Metallic d) Nuclear

a) Ionic

An unknown substance, when dissolved in water, conducts electricity and has an extremely high melting point. What types of bonds does the substance most likely have? a) Ionic b) Covalent c) Metallic d) Nuclear

a) Ionic

Why does atomic radius decrease going to the right of the P.Table? a) Because the atoms get heavier, & valence electrons tend to stay away from heavier atoms b) Because the nucleus becomes more positive, so valence electrons are pulled in closer c) Because the nucleus becomes more negative, so valence electrons leave the atom d) Because the nucleus becomes more positive, so valence electrons are repelled more easily

b) Because the nucleus becomes more positive, so valence electrons are pulled in closer

What products are formed when calcium oxide decomposes? a) Ca + O b) Ca + O2 c) Ca2 + O2 d) CO2 + O2

b) Ca + O2

Two nonmetals come together to form these types of bonds: a) Ionic b) Covalent c) Metallic d) Nuclear

b) Covalent

35) Which atom has the same electron configuration has the Bromide ion, Br1- ? a) Br b) Kr c) Se d) Rb

b) Kr

Lead is more dense than styrofoam...that means: a) Lead is always heavier b) Lead's atoms are more tightly packed than styrofoam c) Lead is always lighter d) Lead is a solid state of matter and styrofoam is not

b) Lead's atoms are more tightly packed than styrofoam

Which of the following is an example of a heterogeneous mixture? a) Sodium Chloride b) Sand & Iron Filings c) Tap Water d) Sucrose (C12H22O11)

b) Sand & Iron Filings

Which type of reaction is the following: Zn + 2HCl → H2 + ZnCl2 a) Double Replacement b) Single Replacement c) Combustion d) Synthesis

b) Single Replacement

What is the correct formula of Xenon Hexaiodide? a) XeI b) XeI6 c) XeI5 d) XeI7

b) XeI6

What phase change occurs when a substance goes from an extremely fast-moving, high energy state to a state in which it has a definite volume, but not a definite shape? a) freezing b) condensation c) evaporation d) sublimation

b) condensation

A ball of a mystery material floats on top of water that means its density is: a) more than the water b) less dense than water c) equal to water's density d) density does not matter in this case.

b) less dense than water

In which block does an atom with the following electron configuration belong: 1s22s22p63s23p64s23d104p3 a) s-block b) p-block c) d-block d) f-block

b) p-block

Given the following equation, what is the coefficient in front of oxygen in order to make it balanced using the smallest whole number coefficients? ___C4H10 + ___O2 → ___CO2 + ___H2O a) 6 b) 7 c) 13 d) 20

c) 13

How many protons, neutrons, & electrons are in the following isotope: Calcium-42? a) 20 protons, 20 neutrons, 20 electrons b) 42 protons, 42 neutrons, 42 electrons c) 20 protons, 22 neutrons, 20 electrons d) 20 protons, 20 neutrons, 22 electrons

c) 20 protons, 22 neutrons, 20 electrons

Which of the following is the correct chemical equation for the reaction of rubidium metal with chlorine gas? The product is solidified rubidium chloride. a) Rb(s) + Cl(g) → RbCl(s) b) RbCl(s) → Rb(s) + Cl(g) c) 2Rb(s) + Cl2(g) → 2RbCl(s) d) 2RbCl(s) → 2Rb(s) + Cl2(g)

c) 2Rb(s) + Cl2(g) → 2RbCl(s)

How many copper ions are in the formula of copper (I) Nitride? a) 1 b) 2 c) 3 d) none of the previous

c) 3

Which of the following is an example of a homogeneous mixture? a) Oxygen b) Carbon Dioxide c) Air d) Water Vapor

c) Air

Given the atomic model above, determine which element it represents. a) Magnesium, because there are 12 subatomic particles in the nucleus b) Argon, because there are 18 total subatomic particles c) Carbon, because there are 6 protons in the nucleus d) None of the previous

c) Carbon, because there are 6 protons in the nucleus

When ethanol burns in oxygen, carbon dioxide and water are produced. Which reaction type is this? C2H5OH + 3O2 → 2CO2 + 3H2O a) Synthesis b) Double Replacement c) Combustion d) Single Replacement

c) Combustion

Which of the following instances with sugar, or, sucrose (C12H22O11), is an example of a physical change? a) Burning the sugar when heating it over a Bunsen burner b) Mixing it with sulfuric acid to produce pure, black carbon c) Dissolving a couple grams of it into distilled water d) Mixing it with some liquefied potassium chlorate to produce an abundance of carbon dioxide

c) Dissolving a couple grams of it into distilled water

What is the name of the compound with the formula PbO? a) Lead Oxide b) Lead (I) Oxide c) Lead (II) Oxide d) Lead Monoxide

c) Lead (II) Oxide

Which of these metals is the least reactive? a) Cesium b) Sodium c) Lithium d) Potassium

c) Lithium

Given the following mass numbers and percent abundances, determine the identity of the element: Mass Number | Percent Abundance 58 | 68.1% 60 | 26.2% 61 | 1.1% 62 | 3.6% 64 | 1.0% a) Iron b) Cobalt c) Nickel d) Copper e) Cerium

c) Nickel

33) Which of the following elements has similar properties to those of Nitrogen? a) Carbon b) Oxygen c) Phosphorus d) Neon

c) Phosphorus

What is the correct order of increasing ionization energy? (lowest to highest)? a) Rb < I < K < Br b) K < Rb < I < Br c) Rb < K < I < Br d) Br < I < K < Rb

c) Rb < K < I < Br

Which set only contains molecular (covalent) compounds? a) SO42-, PO43-, CO32- b) NaCl, KCl, OCl2 c) SCl2, SO3, P2O5 d) MgO, CaO, SiO2

c) SCl2, SO3, P2O5

32) Which of the following is a metalloid? a) Aluminum b) Zinc c) Silicon d) Sulfur

c) Silicon

Which best describes what the atom was thought to have looked like after J.J. Thomson's experiments? a) The atom was just a sphere of matter with no subatomic particles inside. b) The atom included a dense center (nucleus) which took up almost no space at all. c) The atom was a ball of positive charge with many negatively-charged particles inside. d) The atom was full of protons, neutrons, and electrons all scattered randomly inside.

c) The atom was a ball of positive charge with many negatively-charged particles inside.

Which of the following is NOT proof that a chemical change has occurred? a) unexpected color change b) formation of a precipitate c) melting d) production of a gas

c) melting

What is the difference between a zinc ion and a zinc atom? a) number of protons b) number of neutrons c) number of electrons d) mass number

c) number of electrons

In which period on the periodic would an atom with this orbital diagram belong? ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ --- --- --- --- --- --- --- --- --- 1s 2s 2p 3s 3p a) period 1 b) period 2 c) period 3 d) period 4

c) period 3

In order to determine the density of sand, you measure the mass of a random amount to be 100.90 g. The volume of the sand is about 66.5 cm3. What is sand's density? a) 0.659 g/cm3 b) 1.5173 g/cm3 c) 1.5 g/cm3 d) 1.52 g/cm3

d) 1.52 g/cm3

Report the answer to the following to the correct number of significant figures: 300cm x 0.624cm = a) 187.2 cm^2 b) 187 cm^2 c) 190 cm^2 d) 200 cm^2

d) 200 cm^2

What is the balanced chemical equation when sodium carbonate reacts with aluminum nitrate to produce sodium nitrate and aluminum carbonate? a) NaCO3 + AlNO3 → NaNO3 + AlCO3 b) NaC + AlN → NaN + AlC c) Na2CO3 + Al(NO3)3 → Na2(NO3)3 + AlCO3 d) 3Na2CO3 + 2Al(NO3)3 → 6NaNO3 + Al2(CO3)3

d) 3Na2CO3 + 2Al(NO3)3 → 6NaNO3 + Al2(CO3)3

How many significant figures are in 40.00 mL? a) 1 b) 2 c) 3 d) 4

d) 4

The density of gallium is 5.91 g/cm3. How many mL are in 25.0 g of the metal? a) 148 mL b) 0.236 mL c) 150 mL d) 4.23 mL e) 4.2 mL

d) 4.23 mL

How many protons, neutrons, and electrons are in a neutrally-charged atom with an atomic number of 44 and a mass number of 100? a) 44 protons, 44 neutrons, 44 electrons b) 44 protons, 56 neutrons, 100 electrons c) 56 protons, 44 neutrons, 56 electrons d) 44 protons, 56 neutrons, 44 electrons

d) 44 protons, 56 neutrons, 44 electrons

How many hydrogen atoms are in a molecule of ammonium acetate? a) 4 b) 5 c) 6 d) 7 e) none of the previous

d) 7

The density of concentrated hydrochloric acid is 1.18 g/cm3. If you were to measure 6.4 L of this acid, how many grams would this be equivalent to? (1 cm3 = 1 mL) (1 L = 1000 mL) a) 0.18 g b) 0.00018 g c) 7.6 g d) 7600 g e) 5400 g

d) 7600 g

What is the correct formula of Aluminum Sulfate? a) AlSO4 b) AlS c) Al2S3 d) Al2(SO4)3

d) Al2(SO4)3

What is the correct name of the compound with the formula B2Cl4? a) Boron Chloride b) Boron (IV) Chloride c) Tetraboron Dichloride d) Diboron Tetrachloride

d) Diboron Tetrachloride

Which of the following sets of elements are known as diatomic elements? a) Carbon, Sulfur, Oxygen b) Hydrogen, Nitrogen, Phosphorus c) Fluorine, Boron, Oxygen d) Hydrogen, Oxygen, Nitrogen

d) Hydrogen, Oxygen, Nitrogen

31) Which of the following is an alkali metal? a) Calcium b) Aluminum c) Copper d) Lithium

d) Lithium

What are the products of the following reaction: Mg + HNO3 → ? a) MgHNO3 b) MgNO3 + H c) MgNO3 + H2 d) Mg(NO3)2 + H2

d) Mg(NO3)2 + H2

37) Which of the following atoms has the largest electronegativity? a) Aluminum b) Gallium c) Germanium d) Silicon

d) Silicon

How many electrons can fit in the "s" sublevel? "p"? "d"? a) s = 2, p = 4, d = 6 b) s = 10, p = 6, d = 2 c) s = 2, p = 2, d = 2 d) s = 2, p = 6, d = 10

d) s = 2, p = 6, d = 10