Periodic Table
What is a group on the periodic table?
A group is made up of elements in the same column
What element can be commonly found in bananas?
Potassium
What is the atomic number of Nitrogen?
7
What property of metals allows for them to be drawn into thin wires?
Which element is the actinide series named after?
Actinium
What is a period on the periodic table?
A period is made up of elements in the same row
What is the most abundant element in the universe?
Hydrogen
How many protons are in Carbon?
12
What is the class of elements that has both metallic and nonmetallic properties called?
Metalloids
What is a defining characteristic of a noble gas?
They are unreactive
Who is credited with creating the periodic table?
Name an element that is liquid at room temperature (25 Celcius)
Mercury or Bromine
How many protons does Galium have?
31
What is the term for atoms that have the same number of protons but a different number of neutrons?
Isotopes
What is the chemical symbol for the element promethium?
Pm
What is the name of the group of elements that contains oxygen and sulfur?
Chalcogens
What is the second most abundant element on earth? (It is a metalloid that’s often used as a semiconductor)
Silicon
What is the atomic mass of Lead?
207.2
What is the densest element?
Osmium
Name two allotropes of carbon
Diamond, graphite, buckminsterfullerene (buckyballs)
What general category of elements from the periodic table does the rare earth elements refer to?
Lanthanides
What metallic element is found in chlorophyll?
Magnesium
How many naturally occurring elements are there on Earth?
94
What general category of elements from the periodic table gain electrons while participating in chemical reactions?
Nonmetals
What is the name of the element with the atomic symbol W?
Tungsten