chemical changes Flashcards
When metals react with other substances, the metal atoms lose electrons to form _______ ions
Positive
The more reactive a metal is:
( state 2)
- The more vigorous its reactions are
- The more easily it loses electrons in reactions to form positive ions
State the scientific word for ‘ positive ion’ :
Cation
What is the most reactive element in the reactivity series?
Potassium
What is the least reactive element in the reactivity series?
Gold
When a metal reacts with water, a _________ _________ _____ ________ are formed.
metal hydroxide and hydrogen
In general the more reactive the metal, the more rapid the reaction is.
True or false?
True
What happens when a metal reacts with a dilute acid?
A Salt and hydrogen are formed
A metal below __________ in the reactivity series will not react with dilute acids.
Hydrogen
What is a displacement reaction?
When a more reactive metal can displace a less reactive metal from its compounds
Redox reaction definition:
When reduction and oxidation take place at the same time.
State what the acronym OILRIG stands for :
Oxidation Is Loss Reduction Is Gain ( of electrons)
