Intro to Elements
Properties that can be observed or measured WITHOUT changing the composition of the substance are known as _________ properties
physical
This group contains alkaline metals
Group 1
This metal is a liquid at room temperature
mercury
SI, Ge and B are considered to be a part of this family of elements
metalloids
Lithium has this many valence electrons
1
Groups of elements on the periodic table are sometimes referred to as "families" because:
they have the same characteristics
These elements are soft, shiny and highly reactive.
alkaline
Lanthanides have an alternate name.
rare earth metals
Sn, Ga and Al are considered to be a part of this family of elements.
metals
Si has this many energy shells
3
This element is the most abundant element in existence.
hydrogen
Alkaline-earth metals contain this many valence electrons.
2
Elements with the atomic numbers 89-103 are special because many of them are:
radioactive
This group is the most reactive non-metals
halogens
Strontium has this many energy shells.
5
Properties that occur due to a chemical change in which the substance's composition has changed are known as __________ properties.
chemical
DAILY DOUBLE
These 2 series of metals are located on the bottom of the periodic table.
lanthanides and actinides
This group of elements are the most stable elements on the periodic table.
noble gases
Group 17 has this many valence electrons
7
Xenon's symbol is
Xe
Group one elements only contain 1 valence electron. This means...
it can easily bond with other elements
Groups 3-12 make up these metals.
transitional
C, N, and P are in the family of.
non metals
inert means
doesn't react with other elements
Lanthanides have this many energy shells
6