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

Definition


Term
chemistry may be least useful in studying 

Definition


Term

Definition


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

Definition


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

Definition


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

Definition


Term
chemistry may be most useful in studying 

Definition


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

Definition


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

Definition


Term
the study of substances containing carbon is 

Definition


Term
organic chemistry, inorganic chemistry, and physical chemistry are not 

Definition


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

Definition


Term

Definition
application of scientific knowledge to solve problems 


Term
an example of technology is 

Definition
the use of a new antibiotic to fight an infection 


Term

Definition
carried out for the sake of increasing knowledge 


Term

Definition
carried out to solve a problem 


Term
a physical property may be investigated by 

Definition


Term
chemical properties include 

Definition
changes that alter the identity of a substance 


Term
two features that distinguish matter are 

Definition


Term
one chemical property of matter is 

Definition


Term
an example of an extensive physical property is 

Definition


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

Definition


Term
a chemical change occurs when 

Definition


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

Definition
produces no new substance 


Term
an example of a chemical change is 

Definition


Term
a physical change occurs when a 

Definition
glue gun melts a glue stick 


Term
the particles in a solid are 

Definition


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

Definition


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

Definition


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

Definition


Term
a substance classified as a fluid contains particles that 

Definition
may slide past each other 


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

Definition


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

Definition


Term
a list of pure substances could include 

Definition
vitamin C (absorbic acid) 


Term
the substances that are chemically bound together are 

Definition
the elements that compose water 


Term
physical means can be used to separate 

Definition


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

Definition


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

Definition


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

Definition


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

Definition


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

Definition


Term
the reason for organizing, analyzing, and classifying data is 

Definition
to find relationships among the data 


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

Definition


Term
quantitative observations are recorded using 

Definition


Term
qualitative observations are recorded using 

Definition
nonnumerical information 


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

Definition


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

Definition


Term
the validity of scientific concepts is evaluated by 

Definition


Term
a theory is an accepted explanation of an observed phenomenon until 

Definition
repeated data and observation conflict with the theory 


Term
standards are chosen because they 

Definition
are reproducible in another laboratory 


Term

Definition


Term
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 

Definition
standard need not agree with a previously defined size 


Term
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 

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


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

Definition


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

Definition


Term
the SI standard units for length and mass are 

Definition


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

Definition


Term

Definition


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

Definition


Term
the symbol for the metric unit used to measure mass is 

Definition


Term
the quantity of matter per unit volume is 

Definition


Term
a quantity that describes the concentration of matter is 

Definition


Term

Definition


Term

Definition


Term
the standard unit for mass is the 

Definition


Term
a volume of 1 cubic centimeter is equivalent to 

Definition


Term
the symbol that represents the measured unit for volume is 

Definition


Term
the SI base unit for time is the 

Definition


Term
the unite abbreviation for time is 

Definition


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

Definition


Term
the SI base unit for length is the 

Definition


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

Definition


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

Definition


Term
a measure of Earth's gravitational pull on matter is 

Definition


Term
a true statement about mass is that 

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


Term
to determine density the quantities that must be measured are 

Definition


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

Definition


Term
to calculate the density of an object, 

Definition
divide its mass by its volume 


Term
when density is measured, 

Definition
the temperature should be specified 


Term
which statement about density is true? 

Definition
density is a physical property 


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

Definition


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

Definition


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

Definition


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

Definition


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

Definition


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

Definition


Term
100 milliliters is equivalent to 

Definition


Term
10 2 meter is the same as 

Definition


Term

Definition


Term

Definition


Term
1.06 L of water is equivalent to 

Definition


Term
the number of grams equal to 0.5 kg is 

Definition


Term

Definition


Term
convert 25 degrees C to the kelvin scale 

Definition


Term
how many minutes are in 1 week? 

Definition


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

Definition


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

Definition


Term
a measurement is said to have good precision if it 

Definition
agrees closely with other measurements of the same quantity 


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

Definition
precise, but not accurate 


Term
poor precision in scientific measurement may arise from 

Definition
both human error and the limitations of the measuring instrument 


Term
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 

Definition
closeness of a measurement to an accepted value 


Term
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 

Definition


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

Definition
both accurate and precise 


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

Definition


Term
when applied to scientific measurements, the words "accuracy" and "precision" 

Definition
have distinctly different meanings 


Term
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 

Definition


Term
when determining the number of significant digits in a measurement, 

Definition
all nonzero digits are significant 


Term
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 

Definition
show the decimal place of the first digit 


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

Definition


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

Definition
number in the calculation with fewest significant figures 


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

Definition


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

Definition


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

Definition


Term
the measurement that has been expressed to three significant figures is 

Definition


Term
the number of significant figures in the measurement 170.040 km is 

Definition


Term
the measurement that has been expressed to four significant figures is 

Definition


Term
the number of significant figures in the measurement 210 cm is 

Definition


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

Definition


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

Definition


Term
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 

Definition


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

Definition


Term
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 

Definition


Term
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 

Definition


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

Definition


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

Definition


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

Definition


Term
round 1.245 633 501 x 108 to four significant figures 

Definition
1.246 x 108 (to 8th power) 


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

Definition


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

Definition


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

Definition


Term
the measurement of 0.020 L is the same as 

Definition


Term
expressed in scientific notation, 0.0930 m is 

Definition


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

Definition


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

Definition


Term
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 

Definition


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

Definition


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

Definition


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

Definition


Term
if values for x and y vary as ian inverse proportion 

Definition
their product is a constant 


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

Definition


Term
the graph of a direct proportion is a(n) 

Definition


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

Definition


Term
the graph of an inverse proportion is a)n_ 

Definition


Term
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 

Definition
the product of y and x is a constant 


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

Definition


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

Definition


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

Definition


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

Definition
equation graphs as a straight line 


Term
law of conservation of mass 

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


Term
law of multiple proportions 

Definition
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 


Term

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


Term
lse og frginiyr ptopotyiond :) law of definite proportions 

Definition
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 


Term

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


Term

Definition
exactly 1/12 the mass of a carbon12 atom 


Term

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


Term

Definition
atoms of the same element that have different masses 


Term

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


Term

Definition
general term for any isotope of any element 


Term

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


Term

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


Term

Definition
mass of 1 mole of a pure substance 


Term

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


Term

Definition
the emission of a contiguous range of frequencies of electromagnetic radiation 


Term
electromagnetic radiation 

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


Term

Definition
all forms of electromagnetic radiation 


Term

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


Term

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


Term

Definition
lowest energy state of an atom 


Term

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


Term

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


Term

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


Term

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


Term

Definition
the distance between corresponding points on adjacent waves 


Term
angular momentum quantum number 

Definition
indicates the shape of the orbital "L" 


Term
Heisenberg uncertainty principle 

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


Term

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


Term

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


Term

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


Term

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


Term

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


Term

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


Term

Definition
an electron occupies the lowestenergy orbital that can receive it 


Term

Definition
arrangement of electrons in an atom 


Term

Definition
the electroncontaining main energy level with the highest principal quantum number 


Term

Definition
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 


Term

Definition
electrons that are not in the highest occupied energy level 


Term

Definition


Term

Definition
an outer main energy level fully occupied by usually 8 electrons 


Term
Pauli exclusion principle 

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

