Chem Flashcards
what are elements in the periodic table represented by?
Their Nuclear symbol
Sodium reacts quickly with oxygen so it must be..
Stored in oil to stop this reaction. When Sodium reacts with water it produces heat.
What are the majority of elements of the periodic table
Metals
True or False. Some Metals are very reactive
True
Does copper react with water?
No Because it is low on the reactivity series
Copper is not described as unreactive because..
It slowly reacts with other substances
Definition of Extract
To take something out of something
Definition of reactivity
When a substance undergo’s a chemical reaction
Definition Of Reactivity Series
A list of elements in order of their reactivity series. Mainly in order from most reactive to least reactive
Definition of Unreactive
When a substance is unreactive/doesn’t take part in a chemical reaction
What happens when a metal reacts with another substance?
The metal atom loses an electron on the outermost shell
why are group 1 metals reactive?
Because they only have 1 electron to lose to become fully stable
what can a more reactive metal do?
Can push out a less reactive metal from its compound
what is displacement?
takes place of another substance in a chemical reaction
what is a solution?
A mixture formed by a solvent and solute
what is oxidation?
The gain of oxygen and the loss of electrons
what is a redox reaction?
where both Reduction and oxidation take place at the same time.
what is reduction?
The gain of electrons and the loss of oxygen
What is a mineral?
A natrually occuring metal compound
what is a molten?
A liquid substance formed by heating a solid
What is Ore?
A type of rock that has enough of a metal or mineral in it to make it worth taking the metal out.
What is reducing agent?
A chemical that causes reduction by removing oxygen in a reaction.
