Periodic Table test Chapter 13 of Holt Science & technology
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- What does PERIODIC mean?
- regular, repeating pattern
- Who was Dmirti Mendeleev?
- Russian scientist who invented the Periodic Table of Elements to sort the known elements out in an orderly way.
- What is the PERIODIC LAW?
- The chemical and physical properties of elements are periodic functions of their atomic numbers.
- What is the simplest elemtent?
- Hydrogen hsa one proton and one electron with NO neutrons.
- What are the columns on the periodic table called?
- Groups have similar physical/chemical properties.
- Rows in the Periodic table are called what?
- Periods are arranged in patterns, more specifically in order from least amount of protons to most amount of protons.
- What do groups one and two contain?
- Very reactive metals easily ract with other elements in nature.
- What are the elements in group one called?
- Alkali metals are generally soft, silver-colored, shiny, and have low density.
- What are the elements in group two called?
- Alkaline-earth metals are generally silver-colored and can be used (with other elements) to make airplanes.
- What are groups 3-12 called?
- Transition metals are generally good conductors of heat and electricity, and have varying ractivity.
- What are Lanthanides and Actinides?
- the two groups placed below the Table to save roon
- Describe the boron group.
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group 13
one metalloid
four metals
3 electrons in outer level
reactive - Describe the carbon group.
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group 14
one nonmetal
two metalloids
two metals
4 electrons in outer level
ractivity varies - Describe the nitrogen groups.
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group 15
two nonmetals
two metalloids
one metal
5 electrons in outer level
reactivity varies - Describe the oxygen group.
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group 16
three nonmetals
one metalloid
one metal
6 electrons in outer level
reactive - Describe the halogens group.
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group 17
nonmetals
7 electrons in outer level
very reactive - What is so special about group 18? (the Noble Gasses)
- The Noble Gasses are unreactive to other elements under normal conditions.