the study of matter and chages in matter best describes the science of 


chemistry may be least useful in studying 




chemistry is defines as the study of the compostion and structure of materials and 


study of all composition and structure of materials and the changes that materials undergo best describes the science of 


study of the composition and structure of materials and the changes that materials undergo best describes the science of 


chemistry may be most useful in studying 


the branch of chemistry that includes the study of materials and processes that occurring in living things is 


the branch of chemistry that is concerned with the identification and composition of materials is 


the study of substances containing carbon is 


organic chemistry, inorganic chemistry, and physical chemistry are not 


the branch of chemistry concerned with the properties, changes, and relationships between energy and matter is 



application of scientific knowledge to solve problems 

an example of technology is 

the use of a new antibiotic to fight an infection 


carried out for the sake of increasing knowledge 


carried out to solve a problem 

a physical property may be investigated by 


chemical properties include 

changes that alter the identity of a substance 

two features that distinguish matter are 


one chemical property of matter is 


an example of an extensive physical property is 


which of the following is an intensive physical property: volume, length, color, or mass 


a chemical change occurs when 


the melting of candle wax is classified as a physical change because it 

produces no new substance 

an example of a chemical change is 


a physical change occurs when a 

glue gun melts a glue stick 

the particles in a solid are 


the state of matter in which a material is most likely to resist compression is the 


the state of matter in which a material has definite shape and definite volume is the 


the state of matter in which particles are rigidly held in fixed positions is the 


a substance classified as a fluid contains particles that 

may slide past each other 

the state of matter in which a material has a definite volume but no definite shape is the 


under ordinary conditions of temperature and pressure, the particles in a gas are 


a list of pure substances could include 

vitamin C (absorbic acid) 

the substances that are chemically bound together are 

the elements that compose water 

physical means can be used to separate 


the most useful source of chemical information about the elements is a 


a horizontal row of blocks in the periodic table is called a(n) 


elements in a group in the periodic table can be expected to have similar 


a vertical column of blocks in the periodic table is called a(n) 


the elements that border the zigzag line in the periodic table are 


the reason for organizing, analyzing, and classifying data is 

to find relationships among the data 

which of the following observations is quantitative: liquid turns blue litmus paper red; liquid boils at 100C; liquid tastes bitter; liquid is cloudy 


quantitative observations are recorded using 


qualitative observations are recorded using 

nonnumerical information 

a testable statement used for making predictions and carrying out further experiments is a 


a plausible explanation of a body of observed natural phenomena is a scientific 


the validity of scientific concepts is evaluated by 


a theory is an accepted explanation of an observed phenomenon until 

repeated data and observation conflict with the theory 

standards are chosen because they 

are reproducible in another laboratory 



all of the following describe measurement standards except: avoid ambiguity; must be unchanging; need not agree with a previously defined size; confusion eliminated when correct measurement applied 

standard need not agree with a previously defined size 

all of the following describe a unit except: unite compares what is being measured with a previously defined size; usually preceded by a number; usually is not important in finding a solution to a problem; or choice of unit depends on quantify being measured 

a unit is usually not important in finding a solution to a problem 

all of the following are examples of unites except: weight; kilometer; gram; teaspoon 


all but one of these units are SI base units: kilogram; second;liter; Kelvin 


the SI standard units for length and mass are 


the metric unit for length that is closest to the thickness of a dime is the 




the symbols for units of length is order from smallest to largest are 


the symbol for the metric unit used to measure mass is 


the quantity of matter per unit volume is 


a quantity that describes the concentration of matter is 






the standard unit for mass is the 


a volume of 1 cubic centimeter is equivalent to 


the symbol that represents the measured unit for volume is 


the SI base unit for time is the 


the unite abbreviation for time is 


the most appropriate SI unit for measuring the length of an automobile is the 


the SI base unit for length is the 


all of the following are SI units for density except: kb/m3; g/mL; g/cm3; g/m2 


a change in the force of Earth’s gravity on an object will affect its 


a measure of Earth’s gravitational pull on matter is 


a true statement about mass is that 

mass is determined by comparing the mass of an object with a set of standard masses that are part of a balance 

to determine density the quantities that must be measured are 


the relationship between the mass m of a material, its volume V, and its density D is 


to calculate the density of an object, 

divide its mass by its volume 

when density is measured, 

the temperature should be specified 

which statement about density is true? 

density is a physical property 

the density of aluminum is 2.70 g/cm3. The volume of a solid piece of aluminum is 1.50 cm3. Find its mass. 


the mass of a 5.00cm3 sample of gold is 96.5 g. The density of gold is 


what is the density of 37.72 g of matter whose volume is 6.80 cm3? 


the density of sugar is 1.59 g/cm3. The mass of a sample is 4.0g. Find the volume of the sample. 


the mass of a 5.00 cm3 sample of clay is 11g. what is the density of the clay? 


the mass of a 6.0 mL sample of kerosene is 4.92 g. The density of kerosene is 


100 milliliters is equivalent to 


10 2 meter is the same as 






1.06 L of water is equivalent to 


the number of grams equal to 0.5 kg is 




convert 25 degrees C to the kelvin scale 


how many minutes are in 1 week? 


if 1 inch equals 2.54 cm, how many centimeters equal 1 yard? 


a measurement that closely agrees with accepted alues is said to be 


a measurement is said to have good precision if it 

agrees closely with other measurements of the same quantity 

if some measurements agree closely but differ widely from the actual value, these measurements are 

precise, but not accurate 

poor precision in scientific measurement may arise from 

both human error and the limitations of the measuring instrument 

precision pertains to all of the following except: reproducibility of measurements; agreement among numerical values; sameness of measurements; closeness of a measurement to an accepted value 

closeness of a measurement to an accepted value 

these values were obtained as the mass of products from the same reaction: 8.83 g; 8.84 g; 8.82 g. The known mass of products from that reaction is 8.60 g. The values are 


five darts strike near the center of the target. Whoever threw the darts is 

both accurate and precise 

a chemist who frequently carries out a complex experiment is likely to have high 


when applied to scientific measurements, the words “accuracy” and “precision” 

have distinctly different meanings 

using the same balance, a chemist obtained the values 5.224 g, 5.235 g, and 5.25 g for the mass of a sample. These measurements have 


when determining the number of significant digits in a measurement, 

all nonzero digits are significant 

for numbers less than 0.1, such as 0.06, the zeros to the right of the decimal point but before the first nonzero digit 

show the decimal place of the first digit 

to two significant figures, the measurement 0.0255 g should be reported as 


in division and multiplication, the answer must not have more significant figures than the 

number in the calculation with fewest significant figures 

a sum or difference of whole numbers should be rounded so that the final digit is in the same place as the 


the number of significant figures in the measurement 0.000 305 kg is 


the number of significant figures in the measured value 0.003 20 g is 


the measurement that has been expressed to three significant figures is 


the number of significant figures in the measurement 170.040 km is 


the measurement that has been expressed to four significant figures is 


the number of significant figures in the measurement 210 cm is 


the measurement that has only nonsignificant zeros of the following: 0.0037 mL; 60.0 mL; 400. mL; or 506 mL 


the number of these that has five significant figures: 23 410; 0.006 52; 0.017 83; 10.292 


using a metric ruler with 1 mm divisions, you find the sides of a rectangular piece of plywood are 3.54 cm and 4.85 cm. You calculate that the area is 17.1690 cm2. To the correct number of significant figures, the result should be expressed as 


when 64.4 is divided by 2.00, the correct number of significant figures in the result is 


the dimensions of a rectangular solid are measured to be 1.27 cm, 1.3 cm, and 2.5 cm. The volume should be recorded as 


three samples of 0.12g, 1.8 g, and 0.562 g are mixed together. The combined mass of all three samples, expressed to the correct number of significant figures, should be recorded as 


divide 5.7 m by 2 m. The quotient is correctly reported as 


the sum of 314. km and 32 km is correctly expressed as 


the product of 13 cm and 5.7 cm is correctly reported as 


round 1.245 633 501 x 108 to four significant figures 

1.246 x 108 (to 8th power) 

the correct number of significant figures that should appear in the answer to the calculation 3.475 x 1.97 + 2.4712 is 


how may significant digits should be shown in the product of 1.6 cm and 2.4 cm? 


written in scientific notation, the measurement of 9.000 065 cm is 


the measurement of 0.020 L is the same as 


expressed in scientific notation, 0.0930 m is 


the speed of light is 300 000 km/s. In scientific notation, this speed is 


the average distance between the Earth and the moon is 386 000 km. Expressed in scientific notation, this distance is 


an analytical balance can measure mass to the nearest 1/10 000 of a gram, 0.0001 g. In scientific notation, the accuracy of the balance would be expressed as 


when 1.92 x 10 6 kg is divided by 6.8 x 10 2 mL, the quotient in kg/mL equals 


when 6.02 x 10 23 is multiplied by 9.1 x 10 31, the product is 


the capacity of a Florence flask is 250 mL. Its capacity in liters expressed in scientific notation is 


if values for x and y vary as ian inverse proportion 

their product is a constant 

two variables are directly proportional if their ? has a constant value 


the graph of a direct proportion is a(n) 


two variables are inversely proportional if the ? has a constant value 


the graph of an inverse proportion is a)n_ 


which of the following is not true: y is directly proportional to x; x is a variable; the product of y and x is a constant; or the graph of y versus x should be a straight line 

the product of y and x is a constant 

in the expression m = DV, where m is mass, D is density, and V is volume, density is the 


which of the following does not describe an inverse proportion between x and y: xy = k; x = k/y; y = k/x; k = ky 


which of the following does not describe a direct proportion between x and y: xy = k; x/y = k; y/x = k; x = ky 


in the equation density = mass/volume, mass divided by volume as a constant ratio. This means that the 

equation graphs as a straight line 

law of conservation of mass 

states that mass is neither destroyed nor created during ordinary chemical reactions or physical changes 

law of multiple proportions 

states that 2 or more different compounds are composed of the same 2 elements, then the ratio of the masses of the 2nd element combined with a certain mass of the 1st element is always a ratio of small whole numbers 


smallest particle of an element that retains the chemical properties of that element 

lse og frginiyr ptopotyiond ðŸ™‚ law of definite proportions 

fact that a chemical compound contains the same elements in exactly the same proportions by mass regardless of the size of the sample or source of the compound 


shortrange protonneutron, protonproton, and neutronneutron forces hold the nuclear particles together 


exactly 1/12 the mass of a carbon12 atom 


the number of protons in the nucleus of each atom of that element 


atoms of the same element that have different masses 


the total number of protons and neutrons in the nucleus of an isotope 


general term for any isotope of any element 


weighted average of the atomic masses of the naturally occurring isotopes of an element 


6.022 x 10 23 is the number of particles in exactly 1 mole of a pure substance 


mass of 1 mole of a pure substance 


amount of a substance that contains as many particles as there are atoms in exactly 12 g of carbon12 


the emission of a contiguous range of frequencies of electromagnetic radiation 

electromagnetic radiation 

form of energy that exhibits wavelike behavior as it travels through space 


all forms of electromagnetic radiation 


state where an atom has a higher potential energy then it has at ground state 


the number of waves that pass a given point in a specific time 


lowest energy state of an atom 


when a narrow beam of emitted light was shined through a prism, it was separated into a series of specific frequencies of visible light 


the emission of electrons from a metal when light shines on a metal 


a particle of electromagnetic radiation having zero mass and carrying a quantum of energy 


the minimum quantity of energy that can be lost or gained by an atom 


the distance between corresponding points on adjacent waves 

angular momentum quantum number 

indicates the shape of the orbital “L” 

Heisenberg uncertainty principle 

states that it is impossible to determine simultaneously both the position and velocity of an electron or any other particle 


symbolized by m, indicates the orientation of an orbital around nucleus 


a 3dimensional region around the nucleus that indicates the probable location of an electron 


symbolized by n. indicates the main energy level occupied by the electron 


specify the properties of atomic orbitals and the properties of electrons in orbitals 


describes mathematically the wave properties of electrons and other very small particles 


has only 2 possible values that indicate the 2 fundamental spin states of an electron in an orbital 


an electron occupies the lowestenergy orbital that can receive it 


arrangement of electrons in an atom 


the electroncontaining main energy level with the highest principal quantum number 


orbitals of equal energy are each occupied by 1 electron before any orbital is occupied by a second electron and all electrons in singly occupied orbitals must have the same spin 


electrons that are not in the highest occupied energy level 




an outer main energy level fully occupied by usually 8 electrons 

Pauli exclusion principle 

no 2 electrons in the same atom can have the same set of 4 quantum numbers 
