General Info 1
What is a row of the periodic table?
period
Elements can be classified as metals, nonmetals, and ____________________.
metalloids
What do the whole numbers on the periodic table represent? (the number located above the symbol)
atomic number
As you move from left to right across a period, how does the number of valence electrons change?
Increases
Which family emits neon lights when they are exposed to an electric current?
Noble Gases
What is a column on the periodic table?
True or False: Metals are ductile.
False
What part of an atom relates to the tendency of an element to react?
number of valence electrons
How does reactivity change among the alkali metals?
Increases top to bottom
True or False: The halogen family behaves similar to the Noble Gases.
False
Boron (B), silicon (Si), germanium (Ge), and arsenic (As) are elements that have properties that fall between those of metals and nonmetals. What common label could you apply to these elements?
Metalloids
True or False: Metals are good conductors of electricity.
True
Moving from left to right across a row of the periodic table, which value increases by exactly one from element to element?
atomic number
How many valence electrons does a member of the Nitrogen Family contain?
5
Which of the Group 7A elements is the most reactive?
Fluorine
What are two elements from Group 5A that are found in fertilizers?
Nitrogen and Phosphorus
Gas
What is the SI Unit for an element? Hint: It is equal to one twelfth the mass of a carbon-12 atom
atomic mass unit
If Boron is located one block to the left of Carbon which has 6 protons, how many protons must Boron have?
5
Which of the following Group 1A elements is the most reactive, Cesium or Sodium?
Cesium
Name of the scientist who arranged the known chemical elements in a table according to increasing mass
Mendeleev
What are the two most reactive groups of elements in the periodic table?
Alkali Metals and Halogens
The atomic mass unit is based is the mass of which element on the periodic table? Hint: It is in the Carbon family.
Caron-12 atom
How many valence electrons does Lithium have?
1
Other than water which contains the elements hydrogen and oxygen, what is the most common element found in living things?
Carbon