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Each statement illustrates an example of qualitative data since there is no mention of any quantitative value.
<h3>What is meant by qualitative analysis? </h3>
The determination of non-numerical values which gives information about the species participating in a chemical reaction is called qualitative analysis. For example, analysing the products of the reaction or the time it takes for product formation.
This kind of analysis is not a reliable analysis like the quantitative analysis. In quantitative analysis, we have to analyze the amount of energy consumed or the amount of product formed.
No such analysis is made in the case of qualitative analysis which makes this kind of analysis less reliable and data-oriented.
Therefore, the statements mentioning which sample is heavier, which sample takes longer to react and which sample increased the temperature by 3 degrees are all statements which are examples of qualitative analysis.
Read more about qualitative analysis, here
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Answer:
sugar
Explanation:
The Skinny on Obesity is a documentary made by Dr. Lusting and his colleagues from the University of California, San Francisco. It aims at decoding the obesity epidemic. It demonstrates the reasons for rising obesity, relationship between stress and obesity and how the future generations are going to be impacted by it.
In the documentary, sugar was shown as the main contributor to the obesity problem. Addition of sugar to almost all the processed food items has led people to consume huge amounts of sugar unknowingly. The extra sugar is converted into fats which ultimately makes a person obese. It can also lead to problems like insulin resistance, which further cause obesity.
Answer: c. iris – controls the pupil
Explanation:
The iris, a structure which is primarily made up of smooth muscles. These smooth muscles surrounds the pupil. The light enters the eye through pupil which is a black hole present in the middle of the eye. It allows the light to strike the retina. It controls the size of the pupil this way it helps in regulating the amount of light entering the eye. The pupil becomes wider in the darkness and becomes narrower when the light intensity is more. These actions are controlled by iris.
Answer:
Acid pH is <u>1</u> to <u>6</u>, base pH is <u>8</u> to <u>14</u>.
Explanation:
The pH scale ranges from 1 to 14 with 7 being neutral, 1 being the most acidic and 14 being the most alkaline. As you progress further to the left of the scale, substances get more acidic while moving to the right gives you substances that are more alkaline.
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