jueves, 9 de junio de 2016

Ingles 2016


Química Lak 


* Chemical lak is a group formed  by three girls (companions) of 5°2. The bloog goes created to working tidily in english class.
Chemical lak represents the initials of the member. 


Members:

 -Laila Suárez: She is a studious girl. She studies Chemistry, she love Chemistry and practising in the laboratory. She likes English even if it she finds it difficult.



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-Ana Marske: She is a girl of the Technical school 1. She is a student of chemistry. She created this blog with her mates to have an organized English class.


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-Karen Merlo: She is a lazy (at school),but she loves Chemistry. She likes English although it is very difficult.





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Chemistry:



Basic concepts


The basic unit of an element is called an atom. An atom is the smallest building block that you can cut an element into without the element breaking down (turning into a lighter element, for example through nuclear fission or radioactive decay). A chemical compound is a substance made up of two or more elements. In a compound, two or more atoms are joined together to form a molecule. The tiniest speck of dust or drop of liquid, that one can see is made up of many millions or billions of these molecules. Mixtures are substances where chemicals are mixed but not reacted. An example would be mixing sand and salt. This can be undone again to produce salt and sand separately. Chemical compounds are changed by a chemical reaction. An example would be heating sodium bicarbonate, common baking soda. It will make water, carbon dioxide, and sodium carbonate. This reaction cannot be undone.


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Mole

A mole is a very large amount of atoms (602,214,150,000,000,000,000,000 atoms). The atomic mass of an element can be used to see how much of the element makes a mole. For example, the atomic mass of copper is about 63.55. That means about 63.55 grams of copper metal has a mole of atoms. The atomic mass of chlorine is about 35.45. That means 35.45 grams of chlorine has a mole of atoms in it.


Moles can be used to see how many molecules are in chemical compounds, too. Copper(II) chloride is an example. CuCl2is its chemical formula. There is one copper atom (63.55) and two chlorine atoms (35.45 · 2 = 70.90). Add all the molar masses of the elements together to get the molar mass of the chemical compound (63.55 + 70.90 = 134.45). That means in 134.45 grams of copper(II) chloride, there is one mole of copper(II) chloride molecules. This concept is used to calculate how much chemicals are needed in a chemical reaction if no reactants (chemicals that are reacted) should be left. If too much reactant is used, there will be some reactants left in the chemical reaction.

Acids and bases

Acids and bases are common chemicals. Acids release H+ ions when in water, and bases release OH ions when in water. Acids can react with bases. The H+ ion is taken from the acid by the base. This makes water, H2O. A salt is also made when an acid and a base react together. An example would be reacting hydrochloric acid (HCl) and sodium hydroxide(NaOH). Hydrochloric acid releases H+ and Cl- ions in water. The base releases Na+ and OH- ions. The H+ and the OH-react to make water. There is a solution of sodium chloride (NaCl) left. Sodium chloride is a salt.


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Karen:
2-

*The H+ ion is taken from the acid by the base. 

* There is a solution of sodium chloride (NaCl) left.

*If too much reactant is used, there will be some reactants left in the chemical reaction.


3-

* Amonia was formed by a Nitrogen atom and three Hydrogen.

*Moden Chemisty was developed by a practice of physics,medicine,biology,science and arts.

* The estructure of chemical has been outstanding to the study of the structure,properties,compósition and transformation of matter.


Ana Clara

#That one can see is made up of many millions or billions of these molecules.

#Two or more atoms are joined together to form a molecule.

#Mixtures are substances where chemicals are mixed but not reacted.



% The molecule can be formed by different atoms.

%The water is formed by two hydrogen atoms and oxigen atom.

%Mixtures are formed by elements that they don't react with each other.


Laila

-Chemical compounds are changed by a chemical reaction.

-that one can see is made up of many millions or billions of these molecules.

-There is a solution of sodium chloride (NaCl) left.

* The atom was formed by a protons, neutrons and electrons.

* An chemical element is a type of matter, was formed by atoms of the same class, with a specific numbers of protons in his core.

* The acid sulfuric was form by 2 atoms of hydrogen, one atoms of sulphure and four atoms of oxygen.


  • Copy these sentences in your BLOG and say if they are TRUE or FALSE.
    1. Chemistry is the science that deals with materials in laboratories. F
  • _ Chemistry uses materials of laboratories.
    1. There is only one type of chemistry. F
  • _Chemistry is divided in different branches
    1. Organic chemistry looks at which chemicals are in things. T
    2. Organic chemistry looks at things that have carbon in them.T
    3. Polymer chemistry is a small area of chemistry. T
  • Re-read the text and CREATE FOUR false sentences
-Chemistry is based on religion.

Chemistry studies engines in laboratories.

Chemical studies the movement of the wings of seagulls.

Atoms are made only by protons.

Chemistry only studies molecules.







CHEMISTRY: The Periodic table.


  • Complete the text. Use: boiled / body/ alchemist / German / gold /colour / burned / phosphorous
Hennig Brand was a alchemist a german who lived in the 1600 (16 Hundreds). In the 17 Century alchemists wanted to extract gold  from the human body. He was sure urine had gold because of its colour He boiled his own urine and finally. burned the resulting paste at a high temperature. Smoke appeared and this paste burned violently . Brand had isolated phosphorous from his urine. This was the first element that was isolated.


    • Answer
    1. Which were the elements in the “Greek Periodic Table” the first elemnts what had find was water, air, fire and earth.
    2. Why was Antoine Lavoisier important character for Chemistry?lavoisier was the father of the modern chemistry he mades experiments and discober de composition of the water and investigate the photosintesis and mades firsts experiments.And made the first periodic table.
    3. How do we know him now?to day we know the moderm periodic table has the table from mendeleiev.

    • Complete these ideas with verbs in the Passive Voice. You may need present or past tenses. Explain why.
    e.g. All elements were created in the Big Bang. (create)
    1. Elements were from and release into space by exploding stars. (form/release)
    2. These elements was study by scientists during history. (study)
    3. The list of elements was finded in the Periodic Table. (find)
    4. Elements like gold, silver and copper was discover by ancient cultures. (discover)
    5. These elements are used for jewelry and tools. (use)
    6. Gold, silver and copper the can find easily. (can/find)


  • Are these sentences TRUE or FALSE?
  1. For Lavoisier an element cannot be separated by chemical means/methods. __T_
  2. He made a short list of 2 or 3 elements. __F_
  3. He divided elements into gases or metals.__T_
  4. He created a complete periodic table. __F_


  • Complete the table with the scientists’ names. Put them in chronological order (according to the video. Copy the correct sentences.


Scientist’s name

His contribution to science.



John Dalton (D)-(G)

Wolfgang Döbereiner
 (B)- (H)

Dmitri Mendeleev
 (C)-(F)

Hennig Brand (A)

Antoine Lavoisier (E)
a-
isolated the first element.
b-
combined elements to see how they reacted to one another.
c-
finally organized the set of elements in the periodic table.
d-
organized elements according to their atomic weight.
e-
defined what an element was.
f-
predicted elements that had not been discovered yet.
g-
weighed elements.
h-
discovered shared properties and reactions.


Hennig Brand isolated the first element. Antoine Lavoisier defined what an element was. Dmitri Mendeleev predicted elements that had not been discovered yet. John Dalton weighed elements and organized elements according to their atomic weight. Wolfgang Döbereiner combined elements to see how they reacted to one another and discovered shared properties and reactions. Dmitri Mendeleev finally organized the set of elements in the periodic table.
.



  • Make a list of the elements that appear on the video. Include at least 6 elements



ELEMENT

time
e.g.
gold
Au
1:36
1-
copper Cu1:36
2-
silverAg1:36
3-
phosphorousP2:22
4-
sodiumNa3:28
5-
potassiumK3:28
6-
oxygenO1:23




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