Chemistry: The Periodic Table Flashcards
How many elements are in the periodic table?
92 elements
Name three properties of metals
Normally good conductors of heat & electricity, shiny when cut, malleable, dense and sonorous. Most have a high melting point.
What does sonorous mean?
It can produce a deep or ringing sound
What is the vertical columns in the Periodic Table called?
They are called groups
What does brittle mean?
Easy to snap or break.
What are Group 1 elements called?
They are called alkali metals
How do Group 1 metals react with water?
They react vigorously (strongly)
(For Group 1) As you go down the group…
….the more reactive the metals become
What do Group 1 metals produce when reacted with water?
They produce a metal hydroxide and hydrogen gas.
Are the metals on the left or right hand side?
The metals are on the left hand side and the non-metals are on the right.
Name a Group 1 metal
Sodium, Lithium, Potassium, Rubidium, Caesium or Francium
Name a metal
Gold ( more metals)
Name a non-metal
Oxygen ( more non-metals)
What is the chemical symbol for Magnesium?
Mg
What are Group 7 non-metals called
Halogens
What are group 7 the opposite of?
They are the opposite of the Group 1 metals
What is a displacement reaction?
It is where an element from higher up the group takes the place of one from lower down the group in a compound. For example; Potassium iodide + chlorine — Potassium chloride + iodide
What are Group 0 called?
They are called noble gases
How reactive are the halogens?
They are generally reactive
How reactive are the Group 0 gases?
They are very unreactive
What state are the noble gases at room temperature?
They are a gas at room temperature
What are the horizontal rows in the Periodic Table called?
It is called periods
What does malleable mean?
It is able to be hammered or rolled into a thin sheet without breaking.
What is the chemical symbol for Helium
He
