Types of Chemical Changes(2019-2020)

 Vocabulary:  Synthesis, decomposition, single displacement, double displacement

   
Chemical changes happen when atoms are changed to make new substances.


REMEMBER!!  "Changed" doesn't mean simply spacing them out more when a solid turns into a liquid( melting ), or crowding them together to make a liquid from a gas( condensation ) . . . these are changes of state, which are phyical changes.


Chemical changes mean you are making new bonds between atoms that may have been individual atoms before  - in other words, making molecules - or you are breaking bonds between joined atoms to turn them into individual atoms - breaking molecules apart.


You will learn four main ways that atoms are either bonded, unbonded and otherwise switched around chemically.

See below:

1)

                                

2)

                  

3)
               


4)