Chapter 2 Flashcards
Who was Dmitri Mendeleev?
He was a Russian chemist and inventor. He formed the periodic table of elements.
What are the group 1 elements called?
They are called alkalies
Properties of a typical metal
- good conductor of electricity.
- good conductor of heat.
- shiny
- high density (heavy for its size)
- malleable (you can hammer it into different shapes)
- ductile (you can pull it into wire)
- sonorous (makes a ringing sound when hit)
Properties of a typical non metal
- Poor conductor of electricity
- poor conductor of heat
- dull (not shiny)
- low density (light for its size)
- brittle (breaks easily)
- not sonorous
How is metal’s melting point?
It is very high however not all metals are like this
How is non metals melting point like?
It is very low however not all non metals are like this
What are physical properties?
They are what you can judge and measure by looking at the substance
What are the chemical properties?
Chemical properties explain chemical reactions
What is the pattern for groups headed by iron?
As you go down the table the melting increases from top to bottom
How is the melting point for group 1 elements?
Group 1 elements have lower melting points
Physical patterns for group 1 elements
As you get lower down the table the boiling point decreases.
Chemical patterns for group 1 elements
They are very reactive so they take part in reactions a lot and as you go down the group the reactions with water become more vigorous.
