Classify the following reactions: HNO3(aq)+NH3(aq)→NH4NO3(aq)HNO3(aq)+NH3(aq)→NH4NO3(aq) 2Cu(s)+O2(g)→2CuO(s)2Cu(s)+O2(g)→2CuO(s) NaCl(aq)+AgNO3(aq)→NaNO3(aq)+AgCl(s)NaCl(aq)+AgNO3(aq)→NaNO3(aq)+AgCl(s) 2LiOH(aq)+H2SO4(aq)→Li2SO4(aq)+2H2O(l)2LiOH(aq)+H2SO4(aq)→Li2SO4(aq)+2H2O(l) CaCl2(aq)+K2CO3(aq)→2KCl(aq)+CaCO3(s)

CLASSIFY HNO

Explanation:

We can observe physical properties of elements and compounds without changing the substance.

Examples of physical properties: Density, color, boiling point, state of matter, appearance: dull or shiny, etc. 

But we can also observe and measure chemical properties by reacting a substance with something else. For example, like mixing baking soda and vinegar together. The vinegar reacts with the baking soda and produces carbon dioxide: a new substance. 

Some examples of chemical properties: Flammability, amount of heat that is released during combustion, toxicity (how much damage it causes to other organisms), radioactivity, and ability to oxidize (when you have metal that becomes rusty looking).