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35 Cards in this Set
- Front
- Back
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A unique substance that cannot be broken down into simpler substances through chemical processes.
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Element
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A pure substance that is a chemical combination of two or more elements in a fixed ratio.
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Compound
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The physical form a substance is in, such as solid, liquid, or gas.
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Phase
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A substance is that is dissolved in water.
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Aqueous
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A change in which one or more substances change into entirely new substances with different properties.
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Chemical Change
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4 indications that a chemical change has taken place
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Odor
Precipitation Formation Bubbles/ Gas Production Release/Absorb Energy |
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Substances that exist prior to a chemical reaction.
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Reactants
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Substances that are formed as a result of a chemical reaction
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Products
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The law states that mass cannot be gained or lost in a chemical reaction–matter cannot be created or destroyed.
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Law of Conservation of Mass
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The mass of a single atom (or isotope) of an element.
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Atomic Mass
(Found under the element's symbol on a the periodic table) |
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A property that describes whether an element or compound will chemically combine with other substances to form compounds.
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Reactivity
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How did Mendeleyev arrange his periodic table?
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Mendeleyev organized his periodic table based on the properties of the elements, such as reactivity and atomic mass
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Elements in each column of the periodic table have _______________________________________.
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Similar Properties
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The number of protons in the atomic nucleus of an element.
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Atomic Number
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A vertical column in the periodic table.
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Group/Family
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Horizontal rows on the periodic table.
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Period/Row
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The elements in Group 1A.
Most reactive group of metals. React readily with water. |
Alkali Metals
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The elements in Group2A.
Found in the earth’s crust but not in the elemental form due to their high reactivity. 2nd most reactive group of metals. |
Alkaline Earth Metals
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The elements in Groups 1B to 10B. Typical metallic properties.
Produce colored ions. |
Transition Metals
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The elements in Groups 1A to 8A.
Properties of elements vary greatly. Contains all of the nonmetals & metalloids as well as some metals. |
Main Group Elements
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The elements in Group 7A.
Most reactive groups of non-metals. |
Halogens
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The elements in Group 8A.
Least reactive of all elements. |
Noble Gases
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(Period 6)
Rare Earth Metals Shiny reactive metals |
Lanthanides
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(Period 7)
Unstable & radioactive metals. Most are laboratory made. |
Actinides
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Elements that are excelled conductors of heat and electricity.
They generally are shiny and malleable (flexible). |
Metals
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Elements that are poor conductors of heat and electricity.
They generally are dull and brittle. |
Nonmetals
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The elements That exhibit properties of both metals and nonmetals.
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Metalloids
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Most reactive metal on the periodic table?
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Fr
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Most reactive nonmetal on the periodic table?
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F
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Metals get more reactive as you travel _____________________ a group.
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Down
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Nonmetals get more reactive as you travel ______ a group.
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Up
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Where are the metals located on the periodic table?
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To the left of the step ladder.
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Where are the nonmetals located on the periodic table?
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To the right of the step ladder.
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What phase are most of the elements on the periodic table in at room temperature?
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Solid
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Is most of the periodic table is composed of metals or nonmetals?
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Metals
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