Which example is NOT a chemical change? * Hydrogen peroxide bubbles in an open wound on your skin.
Piece of pizza digested when eaten.
Rotting Easter eggs.
Dissolving salt in water.

What is the polyatamic ion of borate

Which diagram shows the correct way to represent an ionic compound of magnesium oxide?

6. using 3 – 4 sentences explain (in your own words) why water expands when it freezes? 7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation.