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at this post we will explain about chemistry test of UMPTN test now called SPMB test, with major chemistry, this test consists of 15 number of problem, almost same with 2001 years and others, redox reaction, equilibrium reaction, and electron configuration have first position number, then standrad gas of PV=nRT, H2O of atom, chemistry name, isotop fosfor, substitution and elimination of reaction, here we give a litle article about chemistry electron configuratoin.

The number of sublevels that an energy level can contain is equal to the principle quantum number of that level. So, for example, the second energy level would have two sublevels, and the third energy level would have three sublevels. The first sublevel is called an s sublevel. The second sublevel is called a p sublevel. The third sublevel is called a d sublevel and the fourth sublevel is called an f sublevel. Although energy levels that are higher than 4 would contain additional sublevels, these sublevels have not been named because no known atom in its ground state would have electrons that occupy them.

OK, happy downloading and let’s study

chemistry test sheet in 2001 contain 15 number of problem, that are, electron configuration, equilibrium of reaction, acid and base, the atom hydrogen and specifies characteristics, mol, hydroxides acid and isomer

here we post a litle tutorial about atom configuration, hope this help you much

The electron configuration of an atom is a form of notation which shows how the electrons are distributed among the various atomic orbital and energy levels.  The format consists of a series of numbers, letters and superscripts as shown below:

1s²

• The large number “1″ refers to the principle quantum number “n” which stands for the energy level.  It tells us that the electrons of helium occupy the first energy level of the atom.
• The letter “s” stands for the angular momentum quantum number “l”.  It tells us that the two electrons of the helium electron occupy an “s” or spherical orbital.
• The exponent “2″ refers to the total number of electrons in that orbital or sub-shell.  In this case, we know that there are two electrons in the spherical orbital at the first energy level.

at this post you will find chemistry exam for university entrance with year 2005, this exam (soal) 10 number with only 2 page of pdf, at this  exam or test you will find chemistry problem  such us  Avogadro law, what is that ? Avogadro law : ” Equal volumes of gases, at the same temperature and pressure, contain the same number of particles, or molecules.

Thus, the number of molecules in a specific volume of gas is independent of the size or mass of the gas molecules. As an example, equal volumes of molecular hydrogen and nitrogen would contain the same number of molecules.

where:

V is the volume of the gas.
n is the number of moles in the gas.
k is a constant.

The ideal gas constant has the same value for all gases.

and then about functional of isomer, koloid ,A Colloid or colloidal dispersion is a type of heterogeneous mixture . A colloid consists of two separate phases: a dispersed phase and a continuous phase. In a colloid, the dispersed phase is made of tiny particles or droplets that are distributed evenly throughout the continuous phase. The size of the dispersed phase particles are between 1nm and 1000nm in at least one dimension. Homogeneous mixtures with a dispersed phase in this size range may be called colloidal aerosols, colloidal emulsions, colloidal foams, or colloidal dispersions.

soal lain meliputi, peluruhan radioaktif, asam-basa, kalium ion, dapat di download pada link berikut

download soal spmb kimia 2005

those soal in pdf type, please make sure your computer was installed pdf reader

A chemical reaction is a process that results in the interconversion of chemical substances.The substance or substances initially involved in a chemical reaction are called reactants.Classically, chemical reactions encompass changes that strictly involve the motion of electrons in the forming and breaking of chemical bonds, although the general concept of a chemical reaction, in particular the notion of a chemical equation, is applicable to transformations of elementary particles, as well as nuclear reactions.

Reaksi kimia adalah transformasi/perubahan dalam struktur molekul. Reaksi ini bisa menghasilkan penggabungan molekul membentuk molekul yang lebih besar, pembelahan molekul menjadi dua atau lebih molekul yang lebih kecil, atau penataulangan atom-atom dalam molekul. Reaksi kimia selalu melibatkan terbentuk atau terputusnya ikatan kimia

soal dapat di download pada akhir setiap post

On the classical definition, therefore, there are only two types of chemical reaction: redox reactions and acid-base reactions. The former involve the motion of lone electrons and the latter of an electron pair.

Chemical reactions may be classified in different ways depending on the particular aspect considered for elaborating the division, or on the branch of Chemistry which the classification originates from. Some examples of widely used terms for describing common kinds of reactions are:

Isomerisation, in which a chemical compound undergoes a structural rearrangement without any change in its net atomic composition; see stereoisomerism
Direct combination or synthesis, in which two or more chemical elements or compounds unite to form a more complex product:

Chemical decomposition or analysis, in which a compound is decomposed into smaller compounds or elements:

Single displacement or substitution, characterized by an element being displaced out of a compound by a more reactive element:

Double displacement or coupling substitution, in which two compounds in aqueous solution (usually ionic) exchange elements or ions to form different compounds:

Combustion, in which any combustible substance combines with an oxidizing element, usually oxygen, to generate heat and form oxidized products. The term combustion is used usually only large-scale oxidation of whole molecules, i.e. a controlled oxidation of a single functional group is not combustion.

Soal Kimia
berikut adalah soal latihan kimia yang lebih di tekankan pada pemahaman terhadap reaksi kimia, meliputi entalphi, reaksi molar, enerigi ikatan dan panas pembakaran. soal dalam bahasa indonesia, dengan format dokumen berupa pdf.

Soal Reaksi Kimia

Soal tersebut dalam bentuk pilihan ganda yang di sesuaikan dengan format soal SPMB dan soal UAN, sehingga diharapkan memudahkan para siswa untuk belajar, Soal lainya akan kami usahakan secepatnya, Selamat Belajar

In chemistry, colligative properties are the properties of dilute solutions of non-volatile solutes whose values depend only on the concentration of solute particles, not on the type of particles present.
Sifat koligatif larutan adalah sifat larutan yang tidak tergantung pada macamnya zat terlarut tetapi semata-mata hanya ditentukan oleh banyaknya zat terlarut (konsentrasi zat terlarut).

The four colligative properties are:

Vapor pressure depression: The change in vapor pressure where the solute is less volatile than the solvent is regulated by Raoult’s law, which states that the pressure is equal to the mole fraction of the solvent times the vapor pressure of pure solvent: P = Xsolvent*P°. This holds truest for ideal solutions.

Freezing-point depression: The presence of a solute decreases the freezing point as compared to a pure solvent. The exact change (?T) can be calculated as van ‘t Hoff factor (i) of the solute multiplied by its molality (m) multiplied by the freezing point depression constant of the solvent (Kf): ?T = i(?Kf)m. Alternatively, it can be calculated as the total molality of all solutes in solution times the depression constant: ?T = Kf ? m.

Boiling-point elevation: Because of the lowered vapor pressure, the boiling point of a solution is elevated as compared to the pure solvent. The change in boiling point (?T) can be calculated in the same way as the change in freezing point, except a different constant is used: the van ‘t Hoff factor (i) of the solute multiplied by its molality multiplied by the boiling point elevation constant of the solvent (Kb): ?T = iKbm. ?T can also be calculated using the sum of all molalities: ?T = Kb ? m.

Osmotic pressure: The presence of solute can cause pressure to be exerted across a permeable membrane according to an equation quite similar to the ideal gas law: ? is the osmotic pressure, n is the number of moles of solute, R is the ideal gas constant, T is the absolute temperature in kelvins, and V is the volume: ? = (nRTi)/V.

Sifat koligatif meliputi:

1. Penurunan tekanan uap jenuh
2. Kenaikan titik didih
3. Penurunan titik beku
4. Tekanan osmotik

Banyaknya partikel dalam larutan ditentukan oleh konsentrasi larutan dan sifat Larutan itu sendiri. Jumlah partikel dalam larutan non elektrolit tidak sama dengan jumlah partikel dalam larutan elektrolit, walaupun konsentrasi keduanya sama. Hal ini dikarenakan larutan elektrolit terurai menjadi ion-ionnya, sedangkan larutan non elektrolit tidak terurai menjadi ion-ion. Dengan demikian sifat koligatif larutan dibedakan atas sifat koligatif larutan non elektrolit dan sifat koligatif larutan elektrolit.

berikut adalah soal latihan kimia, latihan soal berikut di tekankan pada penguasaan larutan terutama sifat koligatif larutan.
Soal Kimia Larutan

Soal tersebut dalam bahasa indonesia dengan format pdf, berbentuk pilihan ganda di sesuaikan dengan format soal UAN dan SPMB

WHAT IS AN ACID OR A BASE?

By the 1884 definition of Svante Arrhenius (Sweden), an acid is a material that can release a proton or hydrogen ion (H+). Hydrogen chloride in water solution ionizes and becomes hydrogen ions and chloride ions. If that is the case, a base, or alkali, is a material that can donate a hydroxide ion (OH-).
menurut definisi dari Svante Arrhenius seorang ilmuwan swedia, asam (acid) adalah material yang dapat melepaskan ion hidrogen (H+). sedangkan basa adalah material yang dapat melepaskan ion hidroksida (OH-), soal latihan asam basa dapat di download pada akhir posting

Sodium hydroxide in water solution becomes sodium ions and hydroxide ions. By the definition of both Thomas Lowry (England) or J.N. Brinsted (Denmark) working independently in 1923, an acid is a material that donates a proton and a base is a material that can accept a proton. Was Arrhenius erroneous?. The Arrhenius definition serves well for a limited use. We are going to use the Arrhenius definitions most of the time. The Lowry- Brinsted definition is broader, including some ideas that might not initially seem to be acid and base types of interaction. Every ion dissociation that involves a hydrogen or hydroxide ion could be considered an acid- base reaction. Just as with the Arrhenius definition, all the familiar materials we call acids are also acids in the Lowry- Brinsted model. The G.N. Lewis (1923) idea of acids and bases is broader than the Lowry- Brinsted model. The Lewis definitions are: Acids are elecron pair acceptors and bases are electron pair donors.

berikut adalah link untuk mendownload soal latihan kimia asam basa, tulisan dalam format pdf.

Soal Latihan Asam Basa

Soal latihan tersebut dalam bahasa indonesia dalam format pilihan ganda, terdapat soal teori maupun hitungan, sehingga diharapkan dapat sebagai latihan untuk mengkuti UAN maupun SPMB

Chemical reactions, also called chemical changes, are not limited to happening in a chemistry lab. Here are some examples of chemical reactions with the corresponding chemical equations:
dalam posting ini soal reaksi kimia dapat di download pada akhir posting

• A silver spoon tarnishes. The silver reacts with sulfur in the air to make silver sulfide, the black material we call tarnish.

2 Ag + S –> Ag2S

• An iron bar rusts. The iron reacts with oxygen in the air to make rust.

4 Fe + 3 O2 –> 2 Fe2O3

• Methane burns. Methane combines with oxygen in the air to make carbon dioxide and water vapor.

CH4 + 2 O2 –> CO2 + 2 H2O

• An antacid (calcium hydroxide) neutralizes stomach acid (hydrochloric acid).

Ca(OH)2 + 2 HCl –> CaCl2 + 2 H2O
As a general rule, biochemical happenings make poor examples of basic chemical reactions because the actual reaction is carried on within living things and under enzyme control.

Soal Latihan

Silahkan mendownload link soal latihan laju reaksi pada link berikut

Soal Laju Reaksi

soal tersebut dalam bahasa indonesia dengan format pdf , berisi berbagai soal tentang laju reaksi seperti konsentrasi larutan, hidrolisis, faktor laju reaksi dan lain sebagainya .

at his post you will be learn in Molecule name, what is molecule ? In science, a molecule is a group of atoms in a definite arrangement held together by chemical bonds. Chemical substances are not infinitely divisible into smaller fractions of the same substance: a molecule is generally considered the smallest particle of a pure substance that still retains its composition and chemical properties.Certain pure substances (e.g., metals, molten salts, crystals, etc.) are best understood as being composed of networks or aggregates of atoms or ions instead of molecular units.(www.wikipedia.org)

this a brief table of molecule (Tabel Nama Unsur)

In organic chemistry, an acyl chloride (or acid chloride) is an organic compound which is a reactive derivative of a carboxylic acid. As part of its molecular structure, an acyl chloride has the reactive functional group -CO-Cl. An acyl chloride has the general formula RCOCl where R is an organic radical group. (wikipedia.com)

Synonyms: ethanedioyl chloride, oxalic acid chloride, oxalic acid dichloride, oxalyl dichloride, oxalic dichloride, oxaloyl chloride
Molecular formula: C₂Cl₂O₂

Physical data

Appearance: colourless liquid with a pungent odour
Melting point: - 9 C
Boiling point: 63 - 64 C
Vapour density: 4.4 (air = 1)
Vapour pressure: 890 hPa at 50 C

OK, then let’s learn more about UMPTN or SPMB test, in 1983 proyek perintis 1 (sebelum UMPTN) is one way to enter state university, at this year chemistry (kimia) have 35 number of problem that must you done, beginning with acid chloride reaction (asam klorida) then electron position, senyawa of ester, eter and keton, hydrogen reaction, Urea, electrode, molar, and closed with various radioactive problems. download those soal by clicking link below

DOWNLOAD SOAL TEST CHEMISTRY (KIMIA) PROYEK PERINTIS 1 - 1983

Link Mirror1

Link Mirror 2

remember that file type is pdf, choose from those link to download