Chemistry 4 Flashcards
Melting & boiling points of metals
High melting and boiling points, they are solids at room temperature
Metals are…
Malleable, strong and flexible, ductile and shiny
Metals are good conductors of…
Heat and electricity
Exceptions of metals and why?
Graphite (form of carbon that conducts electricity) and Mercury (liquid at room temperature)
Malleable
Can be hammered into different shapes
Melting & boiling points of non-metals
Low melting and boiling points
Non-metals are..
Brittle and not shiny
Non-metals are poor conductors of…
Heat and electricity
Brittle
When solid
Oxidation
A chemical reaction that takes place when a substance comes into contact with oxygen or another oxidizing substance
Combustion
A chemical process in which a substance reacts rapidly with oxygen and gives off heat
If a metal is soluble…
It will most likely be basic
Chemical property
How a substance reacts with other substances
Physical property
A characteristic of a substance that can be observed or measured without changing the identity of the substance
Catalyst
A substance that speeds up reactions without itself getting used up
Catalyst converter
A device incorporated in a motor vehicle, containing a catalyst for converting pollutant gases into less harmful ones
What metals are used in catalytic converters?
Platinum, Palladium and Rhodium
Rusting
Corrosion of iron. Oxygen and water are needed
What happens to iron if water and oxygen are present?
Rusts
What happens to iron if water, oxygen and salt are present?
Rusts more then, when water and oxygen are present
What happens to iron if boiled water and no oxygen are present with an oil layer?
Does not rust
What happens to iron if dry air (oxygen) and calcium chloride are present?
Does not rust