Groups 3 through 12 are referred to as ______________.
What is transition metals?
100
Transition metals from periods 6 & 7 that are placed at the bottom of the Periodic Table are called ____________ and _______________.
What are lanthanides (Period 6) and actinides (Period 7)?
100
Unlike most transition metals, mercury is in the ________ state at room temperature.
What is liquid?
100
An element found in the ________ group makes up 80% of the air you breath.
What is nitrogen?
100
Diamond is a natural form of an element in the ________ group.
What is carbon?
200
These two elements are used to make computer chips.
What is silicon and germanium?
200
The most abundant element in the universe is ______?
What is hydrogen?
200
While not a metal, this element is placed above Group 1 in the Periodic Table because it has the same number of electrons in it outer shell and the metals in Group 1.
What is hydrogen?
200
This group has a full set of electrons in its outer energy level which makes them unreactive nonmetals.
What is noble gases?
200
These metals are low density, shiny, soft and highly reactive because they have only 1 electron in their outer energy level.
What are alkali metals?
300
Atoms of most _____________ have an almost complete set of electrons in their outer energy level.
What is nonmetals?
300
Elements in a ___________ in the periodic tale often share similar properties because their atoms have the same number of electrons in the outer energy level.
What is family or group?
300
Moving from left to right on the Periodic Table, the elements become _________ metallic?
What is less?
300
The zigzag line on the periodic table helps you to identify elements as ________, ________, and ________.
What is metal, nonmetal and metalloid?
300
On the periodic table, a row of elements is called a _____.
What is a period?
400
On the periodic Table, a column of elements is called a ________.
What is group or family?
400
The elements in Group 3 - 12 are good conductors of electric current and thermal energy and are __________ at room temperature except for mercury.
What is solid?
400
It is a gas at room temperature and has 6 electrons in its outer energy level.
What is Oxygen?
400
Mendeleev arranged the elements in order of increasing _________.
What is atomic mass?
400
When elements are arranged in order of increasing atomic mass, similar chemical and physical properties were observed in every _____ element.
What is the 8th?
500
Each square of the periodic table includes this information about the element.
What is name, chemical symbol, atomic number and atomic mass?
500
Mosley rearranged the elements in Mendeleev's periodic table in terms of this order.
What is atomic number?
500
Alkaline-earth metals have a greater _________ than alkali metals.
What is density?
500
An element that is a very reactive gas is most likely a member of the ___________.