What is a qualitative observation? 

What is a quantitative observation? 

Is this an example of Qual or Quant Observation: 

The liquid turned purple & began to bubble. 

Is this an example of a Qual or Quant observation:

The thermometer read 34 degrees Celsius. 

Is this an example of a Qual or Quant observation:

At the end of the experiment, the mass was thirteen grams. 

Is this an example of Quant or Qual observation?

Small crackling noises occurred when the mixtures combined.