Family
Radioactivity
Periodic table history
Properties of Metals
Periodic table
100
This family is called the noble gases, have a complete octet, and are extremely stable.
What are the inert gases?
100
Is the result of isotopes that are unstable
What is radioactivity?
100
Creator of the periodic table
Who is Dimitri Mendeleev?
100
A material that can be hammered or rolled into flat sheets is called this.
What is malleable?
100
Horizontal rows on the periodic table are called this
What are periods?
200
These are the 4 nonmetals in the halogen family
What are bromine, iodine, chlorine, fluorine?
200
Some atoms are unstable because they have too many neutrons and release a fast moving electron given off by radioactivity called this.
What is a beta particle?
200
Believed that electrons orbited the nucleus
Who is Niels Bohr?
200
These are malleable, ductile, conductive
What are metals?
200
These are located in the top row of the section underneath the main portion of the periodic table
What are lanthanides?
300
80% of the Earth’s atmosphere is made of this
What is Nitrogen?
300
Type of radioactivity that does not cause a decrease in mass of isotope.
What is Gamma decay?
300
Designed the atomic theory
Who is Dalton?
300
The gradual wearing away of a metal due to a chemical reaction is called this
What is corrosion?
300
These devices are used to artificially synthesize elements
particle accelerators
400
This family can gain, lose or share 4 electrons
What is the carbon family?
400
Radioactivity that consists of high energy waves
What is gamma decay?
400
proposed that all matter was made of small particles called atomos
Who is democritus?
400
the vertical column of the periodic table are called this.
What are groups?
400
This group contains calcium and is prone to losing two electrons.
What are alkaline earth metals?
500
a triatomic member of the oxygen family
What is ozone?
500
The release of a particle that is equivalent to a helium nucleus
What is alpha decay?
500
states that electrons do not orbit the nucleus, but occupies energy levels
What is the cloud model?
500
A material that can be pulled out or drawn into a long wire
What is ductile?
500
Most of these elements are artificially synthesized
What are actinides?
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