How can we find out more about this unknown substance?

BIG IDEA

Making observations of chemical changes.

FOCUS QUESTION

How can we find out more about this unknown substance?

PREDICTION/ HYPOTHESIS

It will not have a smell.
It will feel powdery.
It will make a mess easily. 

PLANNING
First, we observed the powder in the bag.
Next, we opened the bag and observed it.
Then, we added water and saw it change from a solid to a liquid. 

DATA

Smells	How it Feels	How it Looks	Other Observations (most Important)
Is doesn't have a smell.	Crunchy like snow Slick	Powdery Clumps Sticks to the bag
No smell	Clumpy Heavy Hard Mushy	Not a powder	changed from solid to liquid.

CLAIMS AND EVIDENCE

We thought it would have no smell and it did. We thought it would feel powdery and make a mess easily. It did feel powdery and was messy at first but when we added water it changed from powdery to hard, then to soft and more like liquid. 

CONCLUSION/REFLECTION

We were surprised when water changed our substance from a solid to a liquid. Today our group discovered that adding water can change things from one type of substance to another. 

QUESTIONS

How could we change it back to a powder? Can it be changed back to a powder?