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20 Cards in this Set
- Front
- Back
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QUESTION
What is the periodic law? |
ANSWER
The periodic law states that when the elemens are arranged according to their atomic numbers, elements with similar properties appear at regular intervals. |
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QUESTION
What are valence electrons? |
ANSWER
An electron that is found in the outermost shell of an atom that determines the atom's chemical properties. |
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QUESTION
What is a group? |
ANSWER
A vertical column on the periodic table. |
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QUESTION
What is a period? |
ANSWER
A horizontal row on the periodic table. |
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QUESTION
What are the main group elements? |
ANSWER
Elements in groups 1, 2, and 13-18. |
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QUESTION
What are alkali metals? |
ANSWER
Elements in Group 1. (hydrogen, lithium, sodium, potassium, rubidium, cesium, francium) |
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QUESTION
What are alkaline-earth metals? |
ANSWER
Elements in Group 2. (berylium, magnesium, calcium, strontium, barium, radium) |
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QUESTION
What are halogens? |
ANSWER
Elements in Grouop 17. (flourine, chlorine, bromine, iodine, astantine) |
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QUESTION
What are noble gases? |
ANSWER
Elements in Group 18. (helium, neon, argon, krypton, xenon, radon) |
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QUESTION
What are transition metals? |
ANSWER
Transition metals constitute group 3 through 12 and are sometimes called the d-block elements because of their position in the periodic table. |
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QUESTION
What are lanthanides? |
ANSWER
Elements on the top row in the bottom section of the periodic table. (lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium) |
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QUESTION
What are actinides? |
ANSWER
Elements in the row below the lanthanides. (actinium, thorium, protactinium, uranium, neptunium, plutonium, americium, curium, berkelium, californium, einsteinium, fermium, mendelevium, nobelium, lawrencium) |
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QUESTION
What is an alloy? |
ANSWER
A solid or liquid mixture of two or more metals. |
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QUESTION
What is ionization energy? |
ANSWER
The energy that is supplied to remove an electron. |
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QUESTION
What is electron shielding? |
ANSWER
The reduction of the attractive force between a postively charged nucleus and its outermost electron due to the cancelation of some of the positive charge by the negative charges of inner electrons. |
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QUESTION
What is bond radius? |
ANSWER
The length that is half the distance between the nuclei of two bonded atoms. |
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QUESTION
What is a nuclear reaction? |
ANSWER
A reaction that affects the nucleus of an atom. |
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QUESTION
What is a nuclear reaction? |
ANSWER
A reaction that affects the nucleus of an atom. |
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QUESTION
What are superheavy elements? |
ANSWER
An element whose atomic number is greater than 106. |
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QUESTION
What are superheavy elements? |
ANSWER
An element whose atomic number is greater than 106. |
