1.The reaction rate : indicates the number of chemical reactions that take place per unit of time. The reaction rate represents the molarity of the solute in the reaction produced every second of the reaction.
2. Avogadro Numbers : avogadro resolution are 6,023 x 1023 particles
3. Chemical Substance : a material with a definite chemical composition
4. Homogeneous Mixture : is a type of mixture in which the composition is uniform and every part of the solution has the same properties.
5. Heterogeneous Mixture : is a type of mixture in which the components can be seen, as there are two or more phases present.
6. Chemical Change : occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances.
7. Chemical Property : is any of a material's properties that becomes evident during, or after, a chemical reaction; that is, any quality that can be established only by changing a substance's chemical identity.
8. Atom : look like and how they behave were incorrect.
9. Electrons : is a subatomic particle, symbol
e− or
β−, with a negative elementary electric charge
10. Protons : is a subatomic particle, symbol
p
or
p+, with a positive electric charge of +1e elementary charge and mass slightly less than that of a neutron.
11. Atomic Nucleus : the very dense central region of an atom
12. Mass: Is the amount of matter in a substance. It is commonly reported in units of grams.
13. Mass Number : This number is the sum of the number of protons and neutrons.
14. Isotopes : are variants of a particular chemical element which differ in neutron number.
15. Chemical Bond : is a lasting attraction between atoms that enables the formation of chemical compounds.
16. Chemical Formula : is a way of expressing information about the proportions of atoms that constitute a particular chemical compound,
17. Groups : The vertical columns in the periodic table.
18. Ionic Bond : is a type of chemical bond that involves the electrostatic attraction between oppositely charged ions, and is the primary interaction occurring in ionic compounds.
19. Semiconductors : has an electrical conductivity value falling between that of a conductor, such as copper, and an insulator, such as glass.
20. Covalent Bond : is a chemical bond that involves the sharing of electron pairs between atoms.
21. Molecule : A neutral molecule that forms as a result of electron sharing.
22. Metals : Good conductors of heat and electricity.
23. Metalloids : Has properties of both nonmetals and metals.
24. Boiling Point :The point in temperature when the liquid starts to boil.
25. Heat of Fusion : The energy required to change a substance from a solid to a liquid at its melting point.
26. Acid: There are several ways to define an acid, but they include any chemical that gives off protons or H+ in water. Acids have a pH less than 7. They turn the pH indicator phenophthalein colorless and turn litmus paper red.
27. Alkane: An alkane is an organic molecule that only contains single carbon-carbon bonds.
28. Alkene: An alkene is an organic molecule that contains at least one C=C or carboncarbon double bond.
29. Base: A base is a compound that produces OH- ions or electrons in water or that accepts protons.
30. Buffer: A liquid that resists change in pH when an acid or base is added. A buffer consists of a weak acid and its conjugate base.
31. Crystal: A crystal is an ordered, repeating three-dimensional pattern of ions, atoms, or molecules. Most crystals are ionic solids, although other forms of crystals exist.
32. Cathode: A cathode is the electrode which gains electrons or is reduced. In other words, it is where reduction occurs in an electrochemical cell.
33. Diffusion: Is the movement of particles from an area of higher concentration to one of lower concentration.
34. Viscosity : The resistance to flow by a fluid.
35. Decomposition Reaction : One substance breaks down, into 2 more.
36. Law of Conservation and Mass : The mass of all substances that are present before a chemical change equals the mass of all the substances after the change.
37. Titration: Is a procedure in which the concentration of an acid or base is determined by measuring how much base or acid is required to neutralize it.
38. Beta particle: Is an electron, although the term is used when the electron is emitted in radioactive decay.
39. Bond length: Is the average distance between the nuclei of two atoms that share a bond.
40. Carboxylic acid: Is an organic molecule containing a -COOH group. An example of a carboxylic acid is acetic acid.
What compounds can be titration, give an example? And how to manufacture buffer solution?
BalasHapusThank you for your question...
HapusThe compounds can be titration are base compound and acid compound. The example: NaOH +HCl -->NaCl+H2O
We can make a buffer solution by mixing strong acids with weak bases, weak acids with strong bases, or weak acids and weak bases
Explain about the Decomposition reaction and examples!
BalasHapusDecomposition is a type of chemical reaction. It is defined as the reaction in which a single compound splits into two or more simple substances under suitable conditions. It is just the opposite of the combination reaction.
BalasHapusIn a combination reaction, a substance is formed as a result of chemical combination, while in a decomposition reaction, the substance breaks into new substances.
For example: The digestion of food in our body is accompanied by a number of decomposition reactions. The major constituents of our food such as carbohydrates, fats, proteins, etc.,decompose to form a number of simpler substances. These substances further react, releasing large amounts of energy, which keeps our body working.
can you give me some examples about Carboxylic?
BalasHapusThe example of carboxylic is 2-carboxyfuran.
Hapushi indri, How to determine boiling point?
BalasHapusThe boiling point of water decreases as you go higher in elevation. This is because there is less pressure from the atmosphere bearing down on top of the water, which allows the water to bubble and boil at lower temperatures. Cooking times are changed because of this decrease in boiling points since water boiling at a lower temperature means the food will cook at a lower temperature, and an increase in the time for cooking is needed. Determine the temperature at which water will boil based on the pressure the water is under.
BalasHapusPlease give an example from alkana..
BalasHapusisopentane for 2-methylbutane
Hapusneopentane for 2,2-dimethylpropane.
Substance: Material type with fixed composition. Give me an example and explain what the fixed composition is
BalasHapusthe mean of fixed composition is the element,or compound to make the substance is fixed or clearly.
Hapus
BalasHapusIs there any usefulness in the buffer solution? If any please explain the uses contained in the buffer solution.
A buffer resists changes to pH when small amounts of strong acid or base are added to it.
HapusExplanation:
Buffers have many applications. Some of these are
Maintenance of life
Most biochemical processes work within a relatively small pH range.
The body uses buffers solution to maintain a constant pH.
For example, blood contains a carbonate/bicarbonate buffer that keeps the pH close to 7.4.
Biochemical Assays
Enzyme activity depends on pH, so the pH during an enzyme assay must stay constant.
In shampoos.
Many shampoos use a citric acid/sodium citrate shampoo to maintain a slightly acidic "pH balance".
This counteracts the basicity of the detergents present in the shampoo