QUESTIONNAIRE TOPIC 1

Activity 1

Questionaire

1.       Write in the line the name of each step to solve a problem, according to the concept

1.     __________________ identification of the problem type and a step by step procedure to solve it.

2.     ________________ of the problem and determination of what needs to be found out.

3.     ___________________of results as a possible solution to the problem.

4.     _________________of data and known facts related to the problem.

5.     __________________the plan to find a solution.

2.     How did the interest for the study of chemistry awakened?

3.     Who were the alchemists?

4.     What thought the Greeks about the matter?

5.     What alchemist wanted to transform?

6.     What  Robert Boyle published? (talk about what?)

7.     What  Antoine Lavoisier published?

8.     Who is known as the father of the chemistry?

Complete the sentence

9.     ___________________ is the branch of science that studies the _________________________and___________________________ of all the materials as well as the ________________ they suffer.

10.   Write the five branches of the chemistry

11.   Write in the line the name of each branch according to their concept.

a.     __________________________ studies the chemical reactions that take place within living organisms.

o    The fragmentation mechanism of food by the saliva action is an example.

o    The pharmaceutical and food industries use this knowledge

b.     _______________________studies substances with a mineral origin and that does not contain the element Carbon (C) in its composition.

o    Some exceptions of inorganic compounds containing carbon are: carbon monoxide (CO), carbonates (CO₃), carbonites and cyanides (CN).

c.     ________________________studies most of the substances containing carbon.

o    For some time, it was thought that these compounds could only be obtained from plants and animals, but nowadays, many are obtained artificially in laboratories.

o    The oil industry, plastics, cosmetics, paints, among others, are some examples.

d.     ____________________________ deals with the identification and composition of substances, either qualitative (what) or quantitative (how much).

o    The measure of the amount of a specific pesticide in river waters is an example.

o    Laboratories of clinical analysis and water analysis use this branch of chemistry.

e.     _________________________________ studies the physical principles that rule the structure of matter such as mass, density… as well as its chemical transformations like reaction speed and mechanisms, the energy involved, among others.

o    This branch of chemistry also studies the atomic structure, the nucleus and the atom’s electrons. For example, the changes occurring when ice is melted to obtain water.

o    The electrical and nuclear industry use this branch of chemistry.