The periodic table Flashcards
How are the elements ordered
the elements are arranged in order of increasing atomic number
What are the horizontal rows called
the horizontal rows are called periods
What are the vertical columns in the periodic table called
groups
In group one, does the density increase or decrease as you go down
Increases
In group one, does the radioactivity increase or decrease as you go down
Increase
Are most elements metals or non metals
Metals
Are metals found to the left or right of the staircase
Left
MOST metals have similar properties. They are:
they are solid at room temperature (except mercury),
they are hard and strong,
they have a high density,
they are sonorous,
they are shiny, especially when they are freshly cut,
they are good conductors of heat and electricity,
they are malleable (they can be bent and shaped without breaking),
What is mercury’s state at room temperature
Liquid
Metals react with oxygen to produce compounds called metal oxides. What is the formula for magnesium oxide?
magnesium + oxygen → magnesium oxide
Oxygen, carbon, sulfur and chlorine are examples of non-metal elements. Non-metals have properties in common. They are:
dull (not shiny),
poor conductors of heat and electricity (they are insulators),
weak and brittle (they easily break or shatter when solid),
Most non-metals also have these properties:
they have a low density (they feel light for their size),
They are NOT sonorous (they do not make a ringing sound when hit),
What state is bromine at room temperature
Liquid
What state is oxygen at room temperature
Gas
What state is chlorine at room temperature
Gas
An element sinks in water and makes a ringing sound when hit. It is most likely to be:
Metal
