1.1 - Groups and Periods Flashcards
What is a group on the periodic table?
A column
What is a period on the periodic table?
A row
In the periodic table, elements are organised by increasing…
atomic number.
What are the subatomic particles that determine an elements atomic number?
protons
In the periodic table, elements with similar chemical properties occupy the same…
group.
Where are non-metals located on the periodic table?
The top right (except for hydrogen, which is on the left)
Where are metalloids located on the periodic table?
The elements bordering the line of metals.
What time period were the noble gasses discovered in?
1850-1900
What element was discovered first?
Silver
where are the metals located on the periodic table
to the left and in the middle of the periodic table
where are the non-metals located on the periodic table
in the upper right of the periodic table except for hydrogen in the upper lef
what are common properties of metals (name 2 or more)
- high melting points
- good conductors of electricity and heat
- high density
- malleable
- ductile
- hard
what are common properties of non-metals
- not ductile
- poor conductors of electricity and heat
- dull
- not malleable
- soft
- low melting points
- low density
how is the modern periodic table organised?
arranges the elements in increasing order of their atomic numbers and groups atoms with similar properties in the same vertical column with the metals on the left and non-metals on the right
what are most elements in the periodic table known as
metals
