Open main menu

Difference between revisions of "Reversible Changes"

 
Line 23: Line 23:
  
 
{| class="wikitable"
 
{| class="wikitable"
|+ Melting and Freezing
+
|+ Melting and Freezing are reversible.
 
|-
 
|-
 
|[[File:Melting.png|center|600px]]
 
|[[File:Melting.png|center|600px]]
Line 33: Line 33:
  
 
{| class="wikitable"
 
{| class="wikitable"
|+ Condensing and Evaporating
+
|+ Condensing and Evaporating are reversible.
 
|-
 
|-
 
|[[File:Condensing.png|center|600px]]
 
|[[File:Condensing.png|center|600px]]

Latest revision as of 08:37, 31 August 2018

Key Stage 2

Meaning

A reversible change is a change which can be undone.

About Reversible Changes

In a reversible change you can get back the substance you started with.
A change that cannot be reversed is called irreversible.

Reversible changes you should know are:

Examples

Making shapes with playdough is a reversible process.
Playdough.png
Once you squash playdough into a new shape you can squeeze it back into the original shape.
Melting and Freezing are reversible.
Melting.png
A solid will melt and become a liquid. You can then freeze it to become a solid again.
Freezing.png
Condensing and Evaporating are reversible.
Condensing.png
When a gas is condensed into a liquid you can always evaporate it back into a gas.
Evaporating.png