Question | Answer |
which of the following is not an example of a molecular formula | B |
the electrons involved in the formation of a chemical bond are called | valence electrons |
most chemical bonds are | partly ionic and partly covalent |
a covalent bond results when what are shared | electrons |
an octet is equal to | 8 |
when atoms share electrons, the electrical attraction of an atom for the electrons is called the atom's what | electronegativity |
the elements of what group satisfy the octet rule | noble gas |
to draw a lewis structure, on must know the | number of valence electrons in each atom |
a compound that vaporizes readily at room temp. is most likely to be a | molecular compound |
malleability and ductility are characteristics of substances with | mettalic bonds |
to which group do lithium and potassium belong | alkali metals |
mendeleev attempted to organize the chemical elements based on their | properties |
argon, krypton, and xenon are | noble gases |
to which group do flourine and chlorine belong | halogens |
a horizontal row of blocks in the periodic table is called a | period |
a positive ion is known as a | cation |
a negative ion is known as an | anion |
the most reactive group of the nonmetals are the | halogens |
valence electrons are those | in the highest energy level |
in a row in the periodic table, as the atomic number increases, the atomic radius | decreases |
as it travels through space, electromagnetic radiation | exhibits wavelike behavior |
the distance between two successive peaks on a wave is its | wavelength |
a quantum of electromagnetic energy is called a | photon |
the wave model of light did not explain | the photoelectric effect |
the number of orbitals for the d sublevel is | 5 |
for the f sublevel, the number of orbitals is | 7 |
the total number of orbitals that can exist in the second main energy level is | 8 |
the main energy level that can hold only two electrons is the | first |
which group are the noble gases | 18 |
how many groups are found on the periodic table | 18 |
who was the schoolmaster who studied chemistry and proposed an atomic theory | john dalton |
rutherford's experiments led to the discovery of the | nucleus |
organic chemistry is the study of | light |
the discovery of the electron resulted from experiments using | cathode rays |
all atoms of the same element have the same | atomic number |
what is the atomic number for aluminum | 13 |
nickel-60 has | 32 neutrons |
phosphorus-33 contains | 18 neutrons |
gamma rays are | electromagnetic waves |
who called the atom an atom | democritus |
all of the following are steps in the scientific method except | discarding data inconsistent with the hypothesis |
quantitative observations are recorded using | numerical information |
qualitative observations are recorded using | non-numerical information |
all of the following are examples of units except | weight |
the symbol for the metric unit used to measure mass is | g |
the symbol that represents the measured unit for volume is | mL |
the SI base unit for time is the | second |
to calculate the density of an object | divide its mass by its volume |
how many minutes are in one week | 10,080 |
a change in the force of earth's gravity on an object will affect its | weight |
the study of substances containing carbon is | organic chemistry |
technology is the | application of scientific knowledge to solve problems |
basic research is | carried out for the sake of increasing knowledge |
a physical property may be investigated by | melting ice |
chemical properties | include changes that alter the identity of a substance |
two features that distinguish matter are | mass and volume |
a physical change occurs when | glue gun melts a glue stick |
the particles in a solid are | packed closely together |
the particles in a gas are | very far from each other |
the state of matter in which a material has definate shape and definite volume is the | solid state |