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53 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Elements with similar properties (other than atomic mass) |
A. have the same number of neutrons in the nuclei B. occupy the same period of the periodic table C.exist in the same physical state D. have similar electron configurations |
D |
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The scientist who first established the relative masses of different elements was |
A. Maxwell B.Dalton C.Priestley D.Mendeleev |
B |
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The statement that the elements in a given compound are always combined in the same proportions by mass is known as |
A. Daltons Law B. the law of definite properties C. the law of conservation of mass D. the periodic law |
b |
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The mos abundant element in the universe is |
A. Carbon B. Hydrogen C. Oxygen D. Helium |
B |
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The atomic mass of an element is |
A. the average mass number of its isotopes according to their proportions in nature B. the average atomic mass of its isotopes according to their proportions in nature C. the average atomic number of its isotopes according to their proportions in nature D. the atomic mass of its most abundant isotopes |
B |
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Carbon |
A. has properites no other element has B. is a typical metal c. is a typical nonmetal D. Has properties intermediate between those of metals and nonmetals |
D |
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the largest number of elements are classed as |
A.liquid B. inert gas C. metals D. nonmetals |
C |
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The most active of the following nonmetals is |
A. chlorine B. helium C. oxygen D. carbon |
A |
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the most active of the following metals is |
A. copper B. lead C. gold D. potassium |
D |
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The least active of the following nonmetals is |
A. chlorine B. oxygen C. carbon D. helium |
D |
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According to the periodic table the chemical properties of the elements are periodic functions of thier |
A. atomic mass B. density C. mass number D. atomic number |
D
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A verticle column in the periodic table is called a |
A. subshell B.group C.period D. shell |
B |
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A HORIZONTAL ROW IN THE PERIODIC TABLE IS CALLED A |
A. group B.shell C. period D. subshell |
C |
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an atom whose outer electron shell is filled is |
A. an inactive metal B. an inert gas C. a halogen D. an active metal |
B |
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An atom whose outer electron shell lacks one electron of being filled is |
A. halogen B. an inactive metal C. an active metal D. an inert gas |
A |
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in a covalent compound |
A. electrons are shifted from one atom to another B. adjacent atoms share electron pairs C. there must be at least one carbon atom D. only atoms of the same element are present |
B |
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The number of hydrogen atoms in a molecule of ammonium sulfide (NH4)2S is |
A. 6 B. 2 C. 8 D.4 |
C |
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The charge on alkali metal ions is |
A. +1 B.+2 C. -2 D. -1 |
A |
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The ion of the hydroxide group has the symbol |
A. OH B. OH- C. OH+ D. H20- |
B |
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A solid whose particles are irregularly arranged with no definite pattern is said to be |
A. nonpolar B. amorphous C. unsaturated D. a van der waals solid |
A |
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most solids are |
polar crystalline amorphous covalent |
B |
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The weakest bonds are |
metallic van der waals covalent ionic |
B |
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The strongest bonds are |
ionic ban der waals covalent metallic |
C |
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The individual particles in a metal are held together as a result of |
electron sharing between adjacent atoms electron transfer between adjacent atoms a sea of freely-moving electrons the attraction of polar molecules |
C |
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The individual particles in an ionic solid are held together as a result of |
a sea of freely moving electrons the attraction of polar molecules electron transfer between adjacent molecules electron sharing between adjacent atoms |
C |
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The individual particles in a covalent solid are held together as a result of |
electron transfer between adjacent atoms a has of freely moving electrons electron sharing between adjacent atoms the attraction of polar molecules |
C |
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Am example of a molecular solid is |
tin ice diamond table salt |
B |
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Polar molecules behave a though they |
contain tiny magnets have a positive charge at one end and a negative at the other have a negative charge at both ends have a positive charge at both ends |
B |
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ionic crystals dissolve only in liquids that are |
nonpolar supersaturated saturated polar |
D |
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Dissolbing an electrolyte in water results in the formation of |
polar molecules ions precipitate covalent molecules |
B |
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Which of the following would you expect to be a strong electrolyte in solution |
acetic acid AgCl NaCl soap |
C |
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The symbol of the hydronium ion is |
OH+ H3O- H3O+ OH- |
H3O+ |
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Acids do not |
taste sour combine with active metals to give off H2 liberate OH- ions when dissolved in water neutralize bases |
C
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When a strong acid is added to water |
more of it dissolves than in the case of a weak acid more of it foams hydroxide ions than in the case of a weak acid more of it dissociates than in the case of a weak acid less of it forms hydronium ions than in the case of a weak acid |
C |
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Bases do not |
turn red litmus to blue liberate H2 when mixed with an active metal taste bitter |
B |
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The fundamental reaction of neutralization is |
H+plusOH-=H2O |
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When equivalent amounts of a strong acid and a strong base react the resulting solution is |
acidic water neutral basic |
C |
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Pure water has a pH of |
10 1 7 0 |
C |
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The scientist whose experiments showed that tin upon heating combined with a gas from the air was |
Lavoisier Stahl Priestley Becher |
A |
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When 1 gram of a metal is oxidized the resulting oxide has a mass that is |
less than 1g equal to 1g any depending on the metal more than 1 g |
D |
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an example of slow oxidation is |
the rusting of iron the lighting of a match a log burning fireplace a light candle |
A |
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One mole of which of the following compounds contains the largest number of fluorine atoms |
BF3
SF2 HF XeF6 |
D |
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The mass of 1 mole of oxygen, O2, is 32g. The atomic mass of oxygen is |
32u' 32g 16g 16u |
D |
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Chemical reations that give off energy are call |
endothermic activated exothermic oxidation reduction |
C |
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an example of an exothermic process is the |
electrolysis of water neutralization of an acid by a base melting of ice dissociation of a salt in water solution |
b |
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The energy liberated in a chemical reaction comes from the |
equilibrium energy of atomic electron activation energy of atomic election kinetic energy of atomic electron potential energy of atomic electron |
D |
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The decomposition of an unstable compound usually |
is exothermic requires a catalyst to occur occurs only at low temps is endothermic |
A |
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The speed of a chemical reaction is not affected by |
catalyst surface area of te reactants the type of bond in reaction products the concentration of reactants |
C |
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A chemical equilibrium occurs when the |
-concentration of the products equals the concentraions of its reactants -number of molecules of the products equal the nubmer of the molecules of the reactants -mass of the products equal the mass of the reactants -speed of the forward reaction equals the reverse reaction |
D |
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oxidation reduction reactions involve the transfer betwen the reaction substances of |
H+ ions electrons O2 molecules O2- Ions |
B |
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When a substance gains electrons in a chemical reaction, the substance is said to be |
dissociated reduced activated oxidized |
B |
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The atomic mass of N is 14u and that of Ca is 40u. The proportion of N by mass in the compound Ca3N2 is |
19% 81% 35% 40% |
A |
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The number of moles of O2 neede to react with 10 moles of C2H2 in the reaction ...................................... is |
50 10 5 25 |
25 |
