quarter chapter 1 exam review

how many nonmetals, mettalloids, and metals are in group 14? a.) 0 nonmetals, 3 metalloids, and 2 metals b.) 1 nonmetal, 2 metalloids, and 2 metals c.) 2 nonmetals, 2 metalloids, and 1 metal d.) 2 nonmetals, 1 metalloid, and 2 metals e.) 3 nonmetals, 0 metalloids, and 2 metals

1 nonmetal, 2 metalloids, and 2 metals

an atomic mass unit (amu) is defined as... a.) 1.602 x 10^-19 C b.) the mass of 1 mole of hydrogen-1 atoms c.) the mass of 1 hydrogen-1 atom d.) the mass of 1 carbon-12 atom e.) 1/12 the mass of 1 carbon-12 atoms

1/12 the mass of 1 carbon-12 atoms

two isotopes of chlorine are found in nature, Cl-35, and Cl-37. the average mass of Chlorine is 35.45 amu. The mire abundant isotope of Cl has... a.) 17 protons, 17 electrons, 18 neutrons b.) 17 protons, 17 electrons, 18.45 neutrons c.) 17 protons, 17 electrons, 20 neutrons d.) 18 protons, 18 electrons, 17 neutrons e.) 19 protons, 19 electrons, 16 neutrons

17 protons, 17 electrons, 18 neutrons

identify the halogen from period 4 a.) Br b.) I c.) Kr d.) Ar e.) K

Br

which group of three elements contains a transition metal, a halogen, and a noble gas? a.) S, I, Cu b.) Br, Kr, Ba c.) Ar, Hg, Rn d.) Ce, N, He e.) Cu, I, Xe

Cu, I, Xe

which group of three elements contains a nonmetal, a metal, and a metalloid? a.) Li, Al, Si b.) Na, Hg, I c.) I, Hg, Si d.) K, O, Br e.) H, Al , N

I, Hg, Si

what is the nuclear symbol for a species which contains 57 neutrons and has a mass number of 101? a.) Er b.) Ru c.) Md d.) La e.) Os

Ru

which of the following statements concerning matter is correct? a.) a gas has a fixed volume but not a rigid shape b.) a liquid has a fixed volume and a rigid shape c.) a liquid takes on both the volume and the shape of its container d.) a solid has a fixed volume and a rigid shape e.) both answers b and d are correct

a solid has a fixed volume and a rigid shape

all of the following statements are true except... a.) all atoms of a given element have the same mass number b.) for any neutral element, the number of electrons is equal to the number of protons c.) the mass number is the sum of the number of protons and neutrons d.) isotopes of atoms contain the same number of protons but a different number of neutrons e.) the atomic number equals the number of protons

all atoms of a given element have the same mass number

all of the following are postulates of Dalton's atomic theory except... a.) in a given compound, relative numbers of atoms of each kind are definite and constant b.) elements are composed of atoms c.) no atom is changed into another element in an ordinary chemical reaction d.) compounds are formed when two or more atoms combine e.) atoms are composed of electrons, protons and neutrons

atoms are composed of electrons, protons and neutrons

which term best describes table salt (NaCl) at room temperature? a.) gas b.) element c.) compound d.) homogeneous mixture e.) heterogeneous mixture

compound

if a nucleus captures an electron, its atomic number... a.) decreases by 2 b.) decreases by 1 c.) remains the same d.) increases by 1 e.) increases by 2

decreases by 1

and extensive property is... a.) used to identify substances b.) independent of amount c.) related to density d.) dependent upon amount e.) observed throughout a substances

dependent upon amount

vinegar is a homogeneous mixture of two liquids: acetic acid and water. which method is best for separating the components of vinegar? a.) distillation b.) filtration c.) electrolysis d.) gas-liquid chromatography e.) light absorption

distillation

which method is best for separating a mixture of ethyl alcohol and water? a.) distillation b.) light absorption c.) electrolysis d.) gas-liquid chromatography e.) filtration

distillation

all of the following are considered the main group elements except... a.) group 2 b.) group 7 c.) group 14 d.) group 17 e.) group 18

group 7

which term bets describes rocks, such as granite or marble? a.) element b.) molecule c.) distillation d.) homogeneous mixture e.) heterogeneous mixture

heterogeneous mixture

Gamma rays are... a.) helium nuclei with no mass b.) electrons with no mass c.) high energy radiation d.) slow moving neutrons e.) identical to electrons

high energy radiation

if a nucleus captures an alpha particle and then emits a beta particle... a.) its atomic number decreases by one and its mass number increases by 4 b.) its atomic number increases by one and its mass number increases by 4 c.) its atomic number increases by three and its mass number increases by 4 d.) its atomic number increases by two and its mass number increases by 3 e.) its atomic number decreases by one and its mass number increases by 3

its atomic number increases by three and its mass number increases by 4

which of the following is the most effective method of determining isotopic ratios of elements? a.) distillation b.) filtration c.) chromatography d.) absorption spectroscopy e.) mass spectroscopy

mass spectroscopy

all of the following statements are true except... a.) potassium is represented by the symbol K b.) zinc is represented by the symbol Zn c.) argon is represented by the symbol Ar d.) iron is represented by the symbol Fe e.) nitrogen is represented by the symbol Ni

nitrogen is represented by the symbol Ni

which description most accurately describes neptunium-239? a.) mass number= 93, atomic number= 239 b.) mass number= 93, atomic number= 146 c.) mass number= 146, atomic number= 93 d.) number of protons= 93, number of neutrons= 146 e.) number of protons= 93, number of neutrons= 239

number of protons= 93, number of neutrons= 146

an aqueous solution of copper sulfate is blue. This solution absorbs... a.) blue light b.) red light c.) only infrared light d.) only ultraviolet light e.) only light with wavelengths shorter than 400nm

red light

all of the following are examples of an intensive property except... a.) solubility b.) boiling point c.) electrical conductivity d.) density e.) both boiling point and density

solubility

which type of formula provides the most information about a compound? a.) covalent b.) empiricial c.) molecular d.) polyatomic e.) structural

structural

all of the following are examples of chemical change except... a.) the fermentation of wine b.) the tarnishing of silver c.) the condensation of steam d.) the combustion of butane gas e.) the rusting of iron

the condensation of steam

all of the following statements are true except... a.) a proton carries a +1 charge and an electron carries a -1 charge b.) the nucleus of an atom has a negative charge c.) an alpha particle is a helium atom minus its electrons d.) a neutron is an uncharged particle with a mass slightly greater than a proton e.) more than 99.9% of atoms mass is concentrated in the nucleus

the nucleus of an atom has a negative charge

all of the following statements concerning water are false except... a.) the percentage of oxygen in H2O is independent where the sample is obtained b.) H2O is a heterogeneous mixture c.) H2O is a homogeneous mixture d.) H2O is an element e.) H2O has properties similar to those of the elements hydrogen and oxygen

the percentage of oxygen in H2O is independent where the sample is obtained