CHEMISTRY
VOCABULARY
1. Adsorption : absorption by physics, by binding molecules absorbed on the surface of adsorbent
2. Aerob : a state of direct contact with air or oxygen
3. Electron Energy : affinity is liberated by an atom to receive electrons
4. Accu : one of the voltaic cell applications composed of Pb and PbO Electrodes, in sulfuric acid solution which serves as an electrolyte
5. Aldosa : a carbohydrate containing an aldehyde functional group
6. Alotropy : changes in the shape of crystals due to temperature changes
7. Anode : the site of oxidation reaction
8. Amino Acids : groups of organic compounds having carboxyl groups (-COOH) and amino (-NH2). Is a protein constituent
9. Bases : substances that have specific properties, such as slippery when the skin and feel bitter and can change the paper litmus blue to red
10. Conjugate Base : a molecular coupling base that receives protons and acts as a base
11. Battery : the dry cell which is one of the non-rechargeable voltaic cells
12. Benzene : an aromatic hydrocarbon compound containing six carbon atoms
13. Avogadro Numbers : numbers are proportional to 6,023 x 1023 particles
14. Degree of Dissociation : comparison between the amount of substances that decompose with the amount of the substance initially
15. Distillation : separation process of mixed components based on their boiling point difference
16. Energy Bond : the energy required to break the bonds between atoms from one mole of the compound in the form of gas and generated gas atoms
17. Ionization Energy: the lowest energy required for an atom to release its valence electrons
18. Enol : alcoholic compound having a double bond on the carbon atom binding to the hydroxyl group
19. Enolase : enzyme that catalyzes the dehydration process of 2-phosphoglyceric molecules into phosphoenol pyruvate
20. Enthalpy : the energy content of a substance at a fixed pressure
21. Mol Fraction: The number representing the ratio of the number of moles of solute and solvent in a solution
22. Mass : the number of particles that each object contains Material: Everything that occupies space and has mass Meta Position of substituent in benzene ring at position 1.3 .
3. Electron Energy : affinity is liberated by an atom to receive electrons
4. Accu : one of the voltaic cell applications composed of Pb and PbO Electrodes, in sulfuric acid solution which serves as an electrolyte
5. Aldosa : a carbohydrate containing an aldehyde functional group
6. Alotropy : changes in the shape of crystals due to temperature changes
7. Anode : the site of oxidation reaction
8. Amino Acids : groups of organic compounds having carboxyl groups (-COOH) and amino (-NH2). Is a protein constituent
9. Bases : substances that have specific properties, such as slippery when the skin and feel bitter and can change the paper litmus blue to red
10. Conjugate Base : a molecular coupling base that receives protons and acts as a base
11. Battery : the dry cell which is one of the non-rechargeable voltaic cells
12. Benzene : an aromatic hydrocarbon compound containing six carbon atoms
13. Avogadro Numbers : numbers are proportional to 6,023 x 1023 particles
14. Degree of Dissociation : comparison between the amount of substances that decompose with the amount of the substance initially
15. Distillation : separation process of mixed components based on their boiling point difference
16. Energy Bond : the energy required to break the bonds between atoms from one mole of the compound in the form of gas and generated gas atoms
17. Ionization Energy: the lowest energy required for an atom to release its valence electrons
18. Enol : alcoholic compound having a double bond on the carbon atom binding to the hydroxyl group
19. Enolase : enzyme that catalyzes the dehydration process of 2-phosphoglyceric molecules into phosphoenol pyruvate
20. Enthalpy : the energy content of a substance at a fixed pressure
21. Mol Fraction: The number representing the ratio of the number of moles of solute and solvent in a solution
22. Mass : the number of particles that each object contains Material: Everything that occupies space and has mass Meta Position of substituent in benzene ring at position 1.3 .
23. Metabolism : chemical reactions that occur in living things, ranging from very simple single-celled creatures such as bacteria, fungi, plants, animals to humans with the aim of acquiring, converting, and using chemical compounds from its surroundings for its survival.
24. Mole : units comparable to particles of 6.023 x 1023 in every 1 unit
25. Molality : the unit of concentration which denotes the number of moles of substances contained in 1000 grams of solvent
26. Molarity : the unit of concentration defined as many moles of solute in 1 liter (1000 ml) of solution
27. Salt : electrolytic compounds, formed from residual base or positively charged metal with remaining negatively charged acids
28. Style Adhes : the attraction style between molecules that are not similar
29. Empirical Formula : the chemical formula that characterizes the atomic type and the ratio of the number of constituent atoms
30. Chemical formula : the symbol of a substance that reflects the type of substance and the number of atoms that constitute a substance
31. Molecular formula : the symbol of a molecule that provides information about the type and number of atoms accurately from the molecule
32. Electrolysis Cells : electrochemical cells that require energy for chemical reactions therein Eukaryotic Cell that already have nuclear membranes
33. Conjugation : rows of double bonds separated by a single bond
34. Concentration : a quantity that expresses the ratio of the solute to the solvent
35. Metal corrosion : the oxidation process of a metal with air or other electrolytes, in which air or electrolyte will sense reduction
36. pH : the degree of acidity
37. pH Meter : electronic device used to measure pH
38. pOH : degree of basicity
39. Polymerization : formation of long chains of simple molecules
40. Thermochemistry: the branch of science that studies the relationship of heat with chemical reactions
25. Molality : the unit of concentration which denotes the number of moles of substances contained in 1000 grams of solvent
26. Molarity : the unit of concentration defined as many moles of solute in 1 liter (1000 ml) of solution
27. Salt : electrolytic compounds, formed from residual base or positively charged metal with remaining negatively charged acids
28. Style Adhes : the attraction style between molecules that are not similar
29. Empirical Formula : the chemical formula that characterizes the atomic type and the ratio of the number of constituent atoms
30. Chemical formula : the symbol of a substance that reflects the type of substance and the number of atoms that constitute a substance
31. Molecular formula : the symbol of a molecule that provides information about the type and number of atoms accurately from the molecule
32. Electrolysis Cells : electrochemical cells that require energy for chemical reactions therein Eukaryotic Cell that already have nuclear membranes
33. Conjugation : rows of double bonds separated by a single bond
34. Concentration : a quantity that expresses the ratio of the solute to the solvent
35. Metal corrosion : the oxidation process of a metal with air or other electrolytes, in which air or electrolyte will sense reduction
36. pH : the degree of acidity
37. pH Meter : electronic device used to measure pH
38. pOH : degree of basicity
39. Polymerization : formation of long chains of simple molecules
40. Thermochemistry: the branch of science that studies the relationship of heat with chemical reactions
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What is the use of ph and ph meter??
BalasHapusI will reply, pH is the degree of acidity used to express the level of acidity or alkalinity possessed by a solution. It is defined as the soluble hydrogen ion (H +) activity kologarithm.
HapusAnd pH meter is an electronic device that serves to measure the pH (degree and acidity or alkalinity) of a liquid (there is a special electrode that serves to measure the pH of semi-solid materials).
I want to ask. What is the general formula of molality and molarity ?. thank you
BalasHapusMolarity
HapusM = n / V
M = molarity (molar) and = mole
V = volume (liter)
molality
m = n / p
m = molality (n mol)
n = mol
p = mass (kilogram)
Give examples of metal corrosion in everyday life?
BalasHapusThe most common example, namely the destruction of ferrous metals by the formation of oxide rust.
HapusExplain electrolysis reaction from batteries!
BalasHapus
BalasHapusWhat is the difference of molality and molarity, and please give examples of questions and answers form for molality and molarity.
Ok Intan. I will answer. Molality is a unit of concentration which states the number of moles of a substance contained in the 1000 grams of solvent. Molality denoted with the letter m.While Molality The unit of molarity concentration is a widely used unit of concentration, and is defined as the many moles of solute in 1 liter (1000 mL) of solution.
HapusProblems example :
98 gr H2SO4 dissolved in 500 ml of solution, the density of solution is 1.1 g / ml. Count:
A. Molarity (M)
B. Molality (m)
C. Normality (N)
(Ar H = 1, S = 32, O = 16)
Discussion:
A. Molarity (M)
↓
B. Molality (m)
The first step we should look for is the solvent gr, by means of gr the solution is reduced by the solute gr. How to find gr of solution:
Then gr the solute - gr solution of solute and produce gr solvent = 452 gr.
Try to explain the conjugate base and its examples.
BalasHapusI will reply, Bronsted-Lowry also states that if an acid gives a proton (H +), then the rest of the acid has the ability to act as a base. The rest of the acid is expressed as a conjugate base. Similarly for a base, if a base can receive protons (H +), then the substance formed has the ability as an acid called conjugate acid.
HapusExample of a conjugate base:
Acid → Proton + Conjugate Base
HCl (aq) ⇄H + (aq) + Cl- (aq)
H2O (aq) ⇄H + (aq) + OH- (aq)
H2SO4 (aq) ⇄H + (aq) + SO42- (aq)
NH4 + (aq) ⇄H + (aq) + NH
On accu, what produce of anode?
BalasHapusAnode Pb (-): Pb + SO42- → PbSO4 + 2e-
HapusIts product is PbSO4
Are moles, molar and molality the same?
BalasHapusNot the same. Mol is the SI base unit that measures the amount of substance. Molarity is the number of moles contained in each liter of solvent volume. Molality is the number of moles contained in each kilogram of the mass of the solvent.
Hapus