Periodic Table 1
Cu
copper
Ag
Silver
K
Potassium
Al
Aluminum
H
hydrogen
The three classes of elements are these.
What are metals, nonmetals, metalloids?
Negatively charged atoms
What are electrons
Elements in the same group share these characteristic
What are chemical and physical properties?
Do not conduct electricity
nonmetals
As
Arsenic
Positively charged atoms
What are protons
Mendeleev organized the elements of his periodic table according to this.
What is increasing atomic mass?
Elements from left to right in the periodic table are organized in ________________.
What are periods
The vertical columns of the periodic table
groups/families
Po
Polonium
These are the properties of nonmetals.
What are brittleness, low boiling/melting points, dull, and are good insulators?
Good conductors of electricity
metals
Number at the top of an element box
What is the atomic number
Br
Bromine
This class of elements have properties of both metals and nonmetals.
What are metalloids?
The is located at the center of an atom
What is the nucleus
The symbol in an element box is called a _________________.
chemical symbol
The number at the bottom of an element box
What is the atomic mass
P
Phosphorus