The properties of an element can be predicted from
What is its location in the periodic table
100
Usually gasses or brittle solids.
What are non-metals?
100
One or two letters that name the atom is called the
What is the chemical symbol?
100
Silvery solids with low densities and low melting points.
What are Alkali Metals?
100
A row of elements in the periodic table.
What is a period?
200
This group contains neon.
What are the Noble Gasses?
200
Share properties of both metals and non-metals.
What are metalloids.
200
Every element has its own atomic number. The atomic number is the number of _____ in the nucleus of an atom of the element.
What is What is protons?
200
Salt Formers
What are halogens?
200
A column of elements in the periodic table
What are groups?
300
Based on the periodic trends for ionization energy, which would you expect to have the highest ionization energy: Fluorine (F), Nitrogen (N), or Helium (He)?
What is Helium?
300
_____ conducts electricity when exposed to light, so it is used in solar cells and in light meters. (Choices: Bromine, Boron, Selenium, Sulfur.
What is Selenium?
300
True or False: Nitrogen has a larger atomic radius than Oxygen.
What is True?
300
The iron triad
What are iron, cobalt, and nickel?
300
Doesn’t conduct electricity as well as metal
What is a semiconductor?
400
The order of the elements Boron (B), Phosphorous (P), Sulfur (S), and Fluorine (F) in decreasing electron affinity is _____.
What is Fluorine, Sulfur, Phosphorous, and Boron?
400
When Mendeleev made his arrangement of the elements in a table, he found that elements with _____ fell into groups on table.
What is similar properties?
400
A major difference between the two rows of inner transition elements is that the lanthanides _____.
What is occur in nature while most of the actinides are synthetic?
400
The trend of the melting point of nonmetals on the periodic table is _____.
What is decreasing up and right or increasing down and left?
400
A substance that makes something happen faster.
What is a catalyst?
500
Sodium, Na, 11 is a _____.
What is representative element?
500
Henry Moseley improve Mendeleev's arrangement of the elements by changing the arrangement from increasing atomic mass to _____.
What is increasing number of protons or atomic number?
500
A major difference between the two rows of inner transition elements is that the lanthanides _____.
What is occur in nature while most of the actinides are synthetic?
500
When Mendeleev made his arrangement of the elements in a table, he found that elements with _____ fell into groups on table.