Science Final
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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| Type of radiation that is described as an electron emitted from the nucleus. | beta
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| type of radiation that has the greatest amount of penetrating power. | gamma
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| Rutherford used this type of radiation in his experiment. | alpha
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| The number following a chemical symbol in a formula that indicates the number of those atoms present. | subscript
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| Particle in the nucleus of an atom with a positive charge | proton
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| A number on the periodic table that indicates the total number of particles found in the nucleus | atomic mass
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| The center of an atom where nearly all the mass is concentrated | nucleus
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| Structure or particle made up of 2 or more atoms chemically bonded to form a complete unit of a substance | compound
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| This subatomic particle is not located in the nucleus and has a negative charge | electron
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| The number placed in front of chemical symbols and formulas used to balance a chemical equation (Tells how many atoms or molecules of each substance are involved in a reaction.) | coefficient
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| This number on the periodic table tells us the number of protons in the nucleus of an atom | atomic number
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| Type of radiation that has no effect on the atomic mass or atomic number | gamma
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| Type of radiation that increases the atomic number but has no effect on the atomic mass | alpha
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| Subatomic particle found in the nucleus that has no electrical charge | neutron
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| The smallest particle of an element that is still that element | atom
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| Particles with an opposite charge wil exert what force on each other? | attraction
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| What do we call a substance that is made of two or more different elements that are chemically joined. | molecule
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| Horizontal rows on the periodic table are called? | periods
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| When expressing the masses of individual atoms or molecules, what units are used? | amu
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| What do we call the various forms of the same element, each containing a different number of neutrons in the nucleus | isotopes
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| Type of radiation that is described as a helium nucleus | alpha
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| Type of radiation that decreases the atomic mass and atomic number | beta
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| What general collection of elements are brittle, poor conductors of heat and electricity, and have a dull luster | nonmetals
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| Vertical columns on the periodic table are called? | families
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| The outermost electrons are called____electrons | valence
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| The electron cloud is organized into seven of "these". By name they are designated as "K,L,M,N,O,P&Q." | levels
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| An atom with a charge | ion
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| Collection of elements that are malleable, sectile, ductile, generally good conductors of heat and electricity, and are shiny | metals
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| A bond where electrons are shared between two atoms | covalent
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| Type of radiation that is described as a high energy photon | gamma
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| The type of radiation that has the least amount of penetrating power | alpha
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| If an atom has more electrons than protons what is its overall charge? | negative
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| This number refers to the number of electrons that an atom will lose, gain or share in the formation of a chemical bond. Includes a number and a charge sign | oxidation number
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| What general class of elements attract electrons most strongly? | ionic
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| A substance which cannot be broken down into simpler substances by physical methods, but can be simplified by a decomposition chemical reaction | compound
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| An atom gains a charge by what two means? | gaining an electron or losing an electron
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| Which general class of elements are said to be electron lenders or losers? | metals
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| Which general class of elements are said to be electron borrowers or takers? | non-metals
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| Non-metals tend to form what type of ions? | negative
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| Metals tend to form what type of ions? | positive
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| What is Avogadro's number? | 6.02 X 10^23
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| The ability of a metal to be drawn into thin strands of wire is____? | Ductile
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| Chemistry | The science dealing with the structure and compostion of substances, the changes in composition and the ways by which these changes occur
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| Electron Configuration | The number of electrons and their location in the electron cloud
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| Half-Life | The time required for 1/2 of the atoms of a radioactive substance to decay
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| Malliable | Metals ability to be hammered into flat sheets (foil)
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| Sectile | Ability to be cut/"sectioned" with tools
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| Mole | The metric system unit for quantities as counted
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| Exothermic | Heat/Energy is produced/given off
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| Endothermic | Heat/Energy is absorbed/required
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| Activation Energy | The energy required to trigger some chemical reactions
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| Ionic Bond | Electrons transfer from one atom to another, creating oppositely charged atoms called ions
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| Rule | The sum of the oxidation numbers in a compound must equal zero
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| Polyatomic Ion | A group of atoms that collectively behave as a single particle with a charge
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| Precipitate | Insoluble solid that forms as a result of reaction that takes place in a solution
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| Insoluble | Will not dissolve in a given solvent
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Created by:
Thao Co
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