Metals, Conductors, and Actinides oh my!
Family, is another name for a __________ of elements.
What is group (and they all have the same number of valence electrons within a family).
Define periodicity:
What is a tendency to reoccur at regular intervals (for example-Halley's Comet occurs every 76 years, or the newspaper gets delivered every morning). On the table, it is the repeating pattern of properties of elements.
Who invented the modern day structure of the periodic table?
What is Dmitri Mendeleev-a Russian chemists who also discovered periodic law in 1869. He arranged the elements by atomic mass. His arrangement was rows according to their atomic mass and into columns based on chemical and physical properties.
List the characteristics of non-metals:
What is brittle, dull, and poor conductors of heat or electricity.
Row 18 on the periodic table are the ________ _________.
What is Noble gases.
Whose classification system was groups called triads and how were they classified?
What is Dobereiner-the properties of the elements relate to their atomic mass.
The row in the periodic table is called the ________.
What is period
What is the only metal that is a liquid at room temperature?
What is mercury
what are metalloids?
What is has properties of both metals and non-metals.
Transition elements make up groups _________ to __________ on the periodic table.
What is 3-12
T/F: Undiscovered elements are not represented by a blank space on the period table.
What is True
What is a semi-conductor?
What is A semiconductor is a substance, usually a solid chemical element or compound, that can conduct electricity under some conditions but not others, making it a good medium for the control of electrical current.
T/F: chlorine is a metal.
What is False-it is a non-metal or a halogen
The name for the first series of inner transition elements is ? a. lanthanides b. actinides c. metalloids d. metals
What is a. lanthanides
How are elements ordered on the periodic table?
What is by atomic number/ Horizontal rows are periods and columns are groups/ you can determine both chemical and physical properties by knowing their location on the periodic table.
An element in the same group likewise has the same _________ structure.
What is electron
Elements that are gases at room temperature are located where on the periodic table?
What is upper right side
T/F: All non-metals are gases
What is False-
The name for the inner transition elements with atomic numbers 90-103 are? a. lanthanides b. actinides c. metalloids d. metals
What is b. actinides
T/F: Alkali metals are in group 1 of the periodic table.
What is TRUE (first column and have one valence electron)
On the periodic table it begins with __________ __________ and ends with the ________ _________.
What is alkali metals/noble gases
What is located in row 2 on the periodic table?
What is alkaline earth metals.
The majority of elements on the periodic table are ________. a. non-metals b. metals c. metalloids d. transition
What is b. metals