Baking Soda & Vinegar

We know a there was formation of a gas because the balloon inflated.

We know there was a change in temperature because the beaker became really cold.

Formation of a gas and change in temperature are chemical changes.

Crushing Sugar & Melting Sugar

Crushing sugar shows a physical change - change in size and shape.

Melting sugar: we can see a gas forming from the bubbles, we can see a color change (white to yellow to brown to black), and we know there is a temperature change.

Oxygen Lab

Today we reviewed physical and chemical properties before starting our lessons on physical and chemical changes.

We know that oxygen must be present to have fire.

We were able to calculate the approximate amount of oxygen in the glass.

I forgot to take a video during class, so here's Lela doing the experiment...

Exploring Robotics & Coding

Compounds

We looked at three compounds:

Copper Sulfate

Sodium Sulfate

Calcium Chloride

Our Periodic Table of Elements!

Density Lab

Density = mass / volume