Final Exam
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Scientific law | a brief statement that combines past observations and predicts future ones
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| Law of conservation of energy | energy is neither created or destroyed
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| Law of conservation of mass | matter is neither created or destroyed in a chemical reaction
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| Law of constant composition | all samples of a given compound have the same proportions of their constituent elements
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| Aluminum | Al
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| Antimony | Sb
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| Argon | Ar
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| Arsenic | As
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| Barium | Ba
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| Bismuth | Bi
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| Boron | B
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| Bromine | Br
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| Cadmium | Cd
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| Calcium | Ca
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| Carbon | C
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| Chlorine | Cl
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| Chromium | Cr
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| Cobalt | Co
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| Copper | Cu
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| Flourine | F
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| Gold | Au
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| Helium | He
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| Hydrogen | H
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| Iodine | I
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| Iron | Fe
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| Lead | Pb
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| Lithium | Li
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| Magnesium | Mg
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| Manganese | Mn
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| Mercury | Hg
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| Neon | Ne
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| Nickel | Ni
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| Nitrogen | N
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| Oxygen | O
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| Palladium | Pd
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| Phosphorus | P
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| Platinum | Pt
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| Plutonium | Pu
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| Potassium | K
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| Radium | Ra
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| Silicon | Si
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| Silver | Ag
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| Sodium | Na
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| Strontium | Sr
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| Sulfur | S
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| Tin | Sn
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| Titanium | Ti
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| Tungsten | W
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| Uranium | U
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| Xenon | Xe
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| Zinc | Zn
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| Periodic law | when the elements are arranged in order of increasing relative mass, certain sets of properties recur periodically
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| Atomic number | the number of protons in the nucleus of an atom
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| Chemical symbol | a one- or two-letter abbreviation for the element that appears directly below its atomic number on the periodic table that each element is represented by
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| Metals | occupy the left side of the periodic table and have similar properties
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| Nonmetals | occupy the upper right side of the periodic table and have varied properties
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| Metalloids | most of the elements that lie along the zigzag diagonal line dividing metals and nonmetals, also called semimetals
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| Ions | charged particles
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| Cations | positively charged ions
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| Anions | negatively charged ions
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| Pure substances | may be elements or compounds
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| Elements | may be atomic or molecular
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| Compounds | may be molecular or ionic
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| Atomic elements | those that exist in nature with single atoms as their basic units
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| Molecular elements | exist as diatomic molecules- 2 atoms of that element bonded together- as their basic units
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| Molecular compounds | compounds formed from 2 or more nonmetals
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| Ionic compounds | contain 1 or more cations paired with 1 or more anions
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| For most conversion problems | given unit * desired unit/given unit = desired unit
information given * conversion factor(s) = information sought
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| Multi-step unit conversion problems | add more steps, each having a conversion factor from the previous step in the denominator and the units of the following step in the numerator
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| International System of units (SI units) | a set of standard units agreed on by scientists throughout the world
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| Length | meter (m)
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| Mass | kilogram (kg)
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| Time | second (s)
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| Temperature | kelvin (K)
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| Prefix multipliers | change the value of a unit by powers of 10
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| Units of energy | joule, calorie, Calorie, and kilowatt-hour
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| Isotopes | atoms with the same number of protons but different numbers of neutrons
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| Percent natural abundance | percentage of isotopes that all elements have
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
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