Naration dialog between teacher and student with 5 scientific approach

One morning in the class at JUANG Senior High School. All of student are listening the explanation of teacher and students take him seriously. After explain her lesson about “atom structure”, teacher ask her student about what you do not understand.

Teacher : ok students,is there any question about my explanation?

Student : I’m sir, i’m not understand about electron, proton, and neutron sir

Teacher : Ok,i will explain again about electron, proton, and neutron. electron is A subatom that has a negative charge and these particles do not have any substructure so that it is believed to be ementer particles. proton is A subatomic particle that has a positive charge. and neutron is Subatomic particles that have a charge that is neutral and somewhat heavier than protons.

student  : Ok sir. I’m understand now. Thank you sir.

Teacher: ok, it’s not problem. Anyting else?

All of sudent silent and teacher continued..

Teacher : ok. If don’t any question. I want you tu make 3 group.

All student make 3 group and...

Teacher : task for group 1 are relationship between electron, proton and neutron in isotop. Task for group 2 are relationship between electron, proton and neutron in isobar. and task group 3 are relationship between electron, proton and neutron in isoton. you can find this task in books or internet. I’m give you 30 minutes to discuss about your tusk and you must make a summary that you discuss and presentation your discuss. Are you understand?

All student: oke sir...

Teacher : Okay,now you must start tu discuss about your task.

After 30 minutes...

Teacher : Time to discuss is over,you must collect your group’s summary.

All student collect their group’s summary and...

Teacher: Good. We will start the presentation for group 1 to explain about their discuss

Group 1: we will presentation about relationship between electron, proton and neutron in isotop. From the book we read, isotop is Elements that have the same number of electrons and protons but different numbers of neutrons. So,  relationship between electron, proton and neutron in isotop is to determine the isotop with the same number of proton, but the number of neutron is different. Ok,our presentation is over, and we will open 1 question.

Other student : can you give me example for your presentation?

group 1 : yes, for example element H have atom mass is 1, atom number is 1 and element H have atom mass is 2, atom number is 1. this isotop because electron and proton from 2 this element is same and netron not same. Are you understand?

Other student: ok, I’m understand now.

Group 1 : Ok. I think that’s all about our presentation and for your attention thank you.

Teacher : Good job. Please give them applause. That’s a good presentation,we will listen explanation of group 2.

Group 2 : we will presentation about relationship between electron, proton and neutron in isobar. From the book we read, isobar is an element that has the same mass atom, but has different number of protons and neutrons. So,  relationship between electron, proton and neutron in isobar is to determine the isobar with the same mass atom, but proton and neutron is different. Ok, our presentation is over, and we will open 1 question.

Other student : can you give me example for your presentation?

group 2 : yes, for example hidrogen have atom mass 3, atom number 1 and helium have atom mass 3, atom number 2. this isobar because from 2 element have atomm mass is same and atom number not same. Are you understand?

Other student: ok, I’m understand now.

Group 2 : Ok. I think that’s all about our presentation and for your attention thank you.

Teacher : Good job. Please give them applause. That’s a good presentation,we will listen explanation of group 3.

Group 3 : we will presentation about relationship between electron, proton and neutron in isoton. From the book we read, isoton is a condition where two element have the same number of neutron. So,  relationship between electron, proton and neutron in isobar is to determine the isoton with the same number of neutron. Ok, our presentation is over, and we will open 1 question.

Other student : can you give me example for your presentation?

group 3 : yes, for example H have atom number 1, atom mass 3, netron 3-1 =2 and He have atom number 2, atom mass 4, netron 4-2 = 2. this isoton because from 2 element have netron is same. Are you understand?

Other student: ok, I’m understand now.

Group 3 : Ok. I think that’s all about our presentation and for your attention thank you.

Teacher : Good job. Please give them applause. You have a good presentation, and you must know about isotop,isoton and isobar. This lesson is the one of indicator for your UAS. Are there any question?

All student: No sir..

Teacher: Ok,i think our lesson is enough. thank you for attention, bye.

All student: bye sir

CAUSE AND EFFECT CHEMICAL REACTION

CAUSE AND EFFECT OF ACID RAIN

Acid rain is defined as all kinds of rain with pH below 5.6. Acid rain is caused by sulfur which is an impurity in fossil fuels as well as nitrogen in the air that reacts with oxygen to form sulfur dioxide and nitrogen oxide. These substances diffuse into the atmosphere and react with water to form sulfuric acid and soluble nitric acid so that it falls with rain water.

Simply put, the acid formation reaction is as follows:

FACTORS CAUSE OF ACID RAIN

The occurrence of an event certainly there is why, as well as the phenomenon of acid rain. The occurrence of acid rain today is more often caused by various activities of men.

Some causes of acid rain :

1. Sulfur and nitrogen produced by industry.
2. Sulfur and nitrogen generated by power plants.
3. Sulfur and nitrogen produced by motor vehicles.
4. Ammonia produced by agricultural activities.

EFFECT OF ACID RAIN

The incidence of acid rain has a detrimental effect on the earth and the life within it.

Some effect of acid rain :

1. Causes respiratory distress in humans.
2. Causes corrosion of buildings.
3. Cause plants dry, wilt and die
4. Destructive infrastructure facilities on earth.
5. Damaging the aquatic ecosystem.

chemistry vocabulary

1. Atom is the smallest part of an element

2. Adsorbent is an absorbent agent

3. Adsorption is Physical Absorption, by binding to molecules absorbed on the surface of the adsorbent

4. Aerob is a state of direct contact with air or oxygen

5. Alkane is carbon compounds that have a single bond

6. Alkene is a carbon compound having double bond

7. Alkuna is a hydrocarbon with at least one triple bond

8. Acid is substances that have specific properties, such as having a sour taste, can damage metal surfaces also marble floors or often also called corrosive

9. Autocatalyst is a catalyst which is formed by itself in a reaction

10. Base is Substances that have specific properties, such as slippery when the skin and feel bitter and can change the paper litmus blue to red

11. The conjugate base is a molecule that receives protons and acts as a base

12. The Quantum Number Azimut is a Number that determines the shape and position of the orbital as the probability of finding the place of the electron's position and is the sub-level of energy

13. Magnetic Quantum Number is Numbers that determine how orbital angular orientations are in space

14. The Spin Quantum Number is Numbers that describe the characteristics of electrons that rotate against their axes and produce two different spin directions

15. The Prime Quantum Number is This number determines the energy level of one electron occupying a certain space in the atom, it also explains the position of the electrons to the nucleus

16. The Oxidation Number is a number present in an element and states the oxidation state of the element

17. Decarboxylation is the reaction of the release of CO2 molecules

18. Degree of Dissociation is Comparison between the amount of substances that decompose with the amount of the substance initially

19. Actinida series is a series whose all elements are similar in nature toactinium

20. Lanthanide Series is a series whose all elements share the same resemblance and resembles lanthanum.

21. Dissociation is an Event of spontaneous decomposition of substances into simpler parts

22. Electrolysis Water is the decomposition of water molecules into its original elements by passing an electric current

23. Electron is negatively charged atomic constituent particles

24. Valence Electron is Electrons in the outermost orbital

25. Electronegativity is the ability of an atom to attract electrons

26. Energy Bond is Energy needed to break the bonds between atoms from one mole of the compound in the form of gas and generated gas atoms

27. Ionisation Energy is the lowest energy that an atom needs to be able to release its valence electrons

28. Entalpi is the energy content of a substance at a fixed pressure

29. Entalpy Dissolution is an enthalpy of dissolution reaction of one mole of the compound into the solvent and into a dilute solution

30. Enthalpy Burning is an enthalpy of a perfect combustion reaction of one mole of oxygen

31. The enthalpy of formation is the enthalpy of the reaction of the formation of one mole of the compound of its elements

32. The decomposition enthalpy is the enthalpy of the decomposition reaction of one mole of the compound into its elements

33. Mol fraction is a number expressing the ratio of the number of moles of solute and solvent in a solution

34. Salt is an electrolyte compound, formed from a residual base or a positively charged metal with the residual acid being negatively charged

35. Ionic Bond is Bonds that occur due to an electrostatic electric force between positively charged ions (cations) with negatively charged ions (anions)

36. The covalent bond is a bond that forms by means of the use of electrons together

37. Isobar is an element that has the same mass number, but has different number of protons and neutrons

38. Isomer is Two molecules that share the same molecular formula but differ in the arrangement of atoms in their molecules

39. Isoton is a condition where two elements have the same number of neutrons

40. Isotop is Elements that have the same number of electrons and protons but different numbers of neutrons

COMPARE AND CONTRAST

COMPARE

what is this compare ??? 

campare is a equation of the object being compared

CONTRAST

what is this cpntrast ???

contrast is a difference of the object being compared

DOUBLE BUBBLE MAP

Double bubble map is A way that makes it easy for us to do comparison.

for example : 

but dont forget you use conjunction if you make a sentence from double bubble map

Classification Of Matter

understanding of atoms, elements, compounds, molecules

Atom

Atom is the smallest piece of an element

Atoms consist of :

• Proton: positively charged
• Electron: negatively charged
• Neutrons: uncharged (neutral)

Element

element is a pure substance that can not be broken down into simpler substances through chemical reactions.

Compound

The compound is a single substance consisting of two or more elements that can be decomposed into a simpler form through chemical reactions.

Molecule

molecule is defined as a group of atoms (at least two) are linked to each other with a very strong (covalent) in a specific arrangement and electrically neutral and stable enough.

The materials (substances) is anything that has mass and volume. Therefore the material has a volume, it must occupy a certain space. All the things that we can see or we touch, such as solar, wind, books, glass, water and even our own bodies, all of them are composed of material. The chemistry in the investigation of studying the properties and changes of matter.

Matter has three states in nature, namely liquid, solid and gas.

Each material has characteristics that can be used to describe these materials, this characteristic known as the nature of the material.The physical properties of a material is the character which can be determined directly without going through the conversion of a substance into the new.The physical properties are divided into two, namely the nature of qualitative and quantitative traits.Qualitative properties are properties that can be described with words.Quantitative trait is the nature that can only be described with numbers and measurement.
While the chemical nature is a character that can only be known after converting it to form new substances (reacting).

material classification

Each material can be classified into two groups, namely a mixture of substances and pure substances.

• Substance physical mixture is a combination of two or more materials. Such as the soil is a mixture of sand, silt and humus foliage.
• Substance mixture evenly mixed and difficult to separate referred to as a homogeneous mixture, whereas that can be easily separated, so-called heterogeneous.
• Pure substances are substances that have a single composition, not mixed with other substances. For example, an iron is a pure material.
• Pure substance derived from a chemical element called element / chemical element, while the pure substance which is a combined result of two reactions is called chemical elements.

Examples of chemical elements: Copper (Cu), gold (Au), hydrogen (H2), helium gas (He), nitrogen gas (N2).
Examples of chemical compounds: water (H2O), methane (CH4), propane (C3H8) etc.