qualitative observation deals with data that can be observed with our senses: sight, smell, touch, taste, and hearing. they do not involve measurements or numbers. for instance, colors, shapes, and textures of objects are all qualitative observations.
describing how copper changes color in chlorine.
Quantitative observation is one which involves measurement of data in numbers.
Qualitative observation is one which can be observed with our senses such as sight, smell, touch, taste, and hearing. Qualitative observations do not involve any measurement.
Measuring the speed is a quantitative observation as it deals with numbers.
Describing how copper changes color in chlorine does not involve any numerical measurement hence a qualitative observation.
Recording how long it takes to burn magnesium is measuring time which is recorded in numbers and is a quantitative observation.
Showing the results of an experiment with a graph is data representation in numbers and is a quantitative observation.
The answer is: Describing how copper changes color in chlorine.
A qualitative observation is a description of the characteristics or qualities of an environment, in which a measurement with numerical magnitudes is not made. Measuring the speed of a chemical reaction, record the time that takes to burn magnesium and make a graph are quantitative observations.
The answer is 2
"He is very skilled at playing an instrument"
Qualitative observations are made with descriptions, while quantitative ones are made with numbers.
Option (b) is the correct answer.
A quantitative data is defined as the data which can only be described in numbers or figures.
For example, mass of an object is 50 kg.
This is a quantitative data as mass is represented in figures.
On the other hand, a data which describes the nature of a substance and that can only be described in words as there will be no figures or numerical data then it is known as a qualitative data.
For example, describing how copper changes color in chlorine is a qualitative data.
Thus, we can conclude that describing how copper changes color in chlorine is an example of making a qualitative observation.
the answer is b
measuring the speed of the chemical...