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He created a table to help classify the elements by their properties.
What is Dimitri Mendeleev?
A column on the periodic table
What is a group?
Rows on the periodic table
What is periods?
They make up most of the periodic table
What are metals?
This element makes up most of your body composition
These nonmetals react with metals to form salts
What are halogens?
The most common element in the universe
What is hydrogen?
How the modern periodic table is organized.
What is increasing atomic number?
This is how Mendeleev organized the periodic table originally.
What is increasing atomic mass?
The ability of a metal to reflect light
What is luster?
The ability of a substance to be pulled into thin wires
What is ductility?
These are metals in group 2
What are Alkaline Earth metals?
These are usually gases at room temperature, and are poor conductors.
What are nonmetals?
Elements that have physical and chemical properties of metals and nonmetals
What are metalloids?
The ability of a substance to be hammered/rolled into sheets
What is malleability?
This is the only metal that is a liquid at room temperature
What is mercury?
Metals in the same group usually share this...
What is similar chemical/physical properties?
These metals react quickly with other elements and exist in nature only as compounds.
What are alkali metals?
These metals take up groups 3-12 on the periodic table
What are transition elements?
This group has halogens.
What is group 17?
Group 18
What are noble gases?
These are useful in computers, televisions, and other electronic devices
What are semiconductors?
These are the characteristics of metals... (name one)
What is shiny and can conduct thermal energy and electricity?
This shows the elements name, atomic number, chemical symbol, state of matter, and atomic mass.
What is element key?
A chart of the elements arranged into rows and columns according to their chemical and physical properties
What is periodic table?