Solids Liquids and Gases

In Science, we have been learning about solids, liquids and gases.  

Students have been practicing sorting solids and liquids:

We can explain the differences and similarities:

We know what happens when heat is added in this situation:

We learned that a gas can be difficult to see and its molecules are spread out far, filling up a space equally, no matter the size or shape of the container.  Just like with these balloons:

Watch our raisins dance in this experiment:

Carbonated beverages are filled up with a dissolved gas called carbon dioxide.  The gas is sealed into the drink and when you open up the bottle or can, the gas starts to come out of the spaces between the molecules of liquid.  When it does this, it forms little bubbles.  The bubbles collect onto the raisins, until the raisins are light enough to float.  When it reaches the top, the bubble pops, making the raisin sink back down again.  They look like they are dancing!