GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A chemical reaction is complete in 2.3 s.
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The solid has a mass of 23.4 g.
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The compound melts at 87.5C.
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Iron is denser than aluminum.
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Detailed explanation-1: -Qualitative observations are made when you use your senses to observe the results. (Sight, smell, touch, taste and hear.) Quantitative observations are made with instruments such as rulers, balances, graduated cylinders, beakers, and thermometers. These results are measurable.
Detailed explanation-2: -A qualitative observation involves the use of five sensory organs, sight, smell, taste, touch, and hearing, and their function to examine the attributes. Being subjective in nature, it focuses on the characteristics and qualities of the variables rather than the numerical value. Examples: My hair is black in color.
Detailed explanation-3: -Examples of quantitative observation include age, weight, height, length, population, size and other numerical values while examples of qualitative observation are color, smell, taste, touch or feeling, typology, and shapes.
Detailed explanation-4: -Hardness. Texture. Behavior. Temperature. Shape. Mood or facial expression. Flavor. 09-Nov-2021