QUESTIONNARIE TOPIC 3

Questionnaire

Activity 3

1.       ________________________proposed that matter was formed by tiny particles which he called atoms (from the greek words “a” = without; “tomos” = divide

2.       _______________________proposed what was known as the first atomic theory.

3.       the matter is formed by very small and indivisible particles called_____________

4.       Dalton’s atomic model is known as __________________________________-

5.       ___________________This person studied cathode ray tube, discovered that these were actually tiny negatively charged particles. These  particles were named _________________

6.       _________________ this person described one of the particles containing a positive charge that are now denominated ______________________

7.       ___________________ this person states that the atom contains a nucleus and this is very small in comparison with the size of the atom

8.       _________________ this person discovers the neutron that would also be located inside the nucleus.

9.       _____________________ this person  sustained that the electrons were constantly moving in “orbits” around the nucleus.

10.   Electrons are not found spinning randomly around the nucleus, instead they are located in specific levels of energy called ________________________________________

11.   The energy in each level is different; levels closer to the nucleus have ____________energy, and the energy ________________ as the levels are farther from the nucleus.

12.   Electrons are in constant motion around the nucleus in such levels of energy. This state is known as the __________________________________

13.   If an atom receives enough energy, the electrons can jump to superior levels of energy; this state is called ___________________________________

14.   The ___________________________________ includes a spectrum of energy having different frequencies and wavelengths.

15.   According to these parameters it is manifested as:

16.   These are the three basic particles in an atom:

17.   The _____________________________ is defined as the number of protons inside the nucleus of an atom.

18.   Chlorine atoms having different number of neutrons must have different masses. Atoms of a particular element having different masses are called ________________

19.   According to the charge of the particles, write what kind of charge have each of the three basic particles of the atom.

QUESTIONNAIRE TOPIC 2

Questionaire 2        Activity 2

1.    What is matter?

2.    Another definition for mass…

3.    What is an atom?

4.    Atoms are made by particles, named and also the charge that they have.

5.    When atoms combine they can form…

6.    What happen when two atoms of hydrogen are combined with one atom of oxygen?

7.    Elements and compounds are…

8.    What is a pure substance?

9.    Why the pure substances have this name?

10. Write the characteristics of an element

11. Write the characteristics of a compound

12. Write the divisions of the matter (copy it from blackboard. Topic explanation)

13. Write the characteristics of the matter

14. What are the properties of the matter?

15. What is a physical change?

16. What is a chemical change?

17. Write two examples for every kind of change

18. Write the physical states of the matter

19. Write the characteristics of the solid state

20. Write the characteristics of the liquid state

21. Write the characteristics of the gaseosus state

22. Write the characteristics of the plasma state

23. Write two examples for every state of the matter

24. Matter passes through… write it from blackboard

25. Changes of state can be either…

26. Write an example for melting

27. Write an example for evaporation

28. Write an example for sublimation

29. Write an example for condensation

30. Write an example for freezing

31. Write an example for deposition

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.