Senin, 17 April 2017

Chemistry Vocabulary

1.      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.
2.     Alcohol - An alcohol is any organic molecule that has an -OH group.
3.     Aldehyde - An aldehyde is any organic molecule that has a -COH group.
4.     Alkane - An alkane is an organic molecule that only contains single carbon-carbon bonds.
5.     Alkene - An alkene is an organic molecule that contains at least one C=C or carbon-carbon double bond.
6.     Alkyne - An alkyne is an organic molecule that contains at least one carbon-carbon triple bond.
7.     Base - A base is a compound that produces OH- ions or electrons in water or that accepts protons. An example of a common base is sodium hydroxide, NaOH.
8.     Beta particle - A beta particle is an electron, although the term is used when the electron is emitted in radioactive decay.
9.     Binary compound - A binary compound is one made up of two elements.
10.   Binding energy - Binding energy is the energy that holds protons and neutrons together in the atomic nucleus.
11.    Bond energy - Bond energy is the amount of energy required to break one mole of chemical bonds.
12.   Bond length - Bond length is the average distance between the nuclei of two atoms that share a bond.
13.   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. An example of a buffer is acetic acid and sodium acetate.
14.   Calorimetry - Calorimetry is the study of heat flow. Calorimetry may be used to find the heat of reaction of two compounds or the heat of combustion of a compound, for example.
15.   Carboxylic acid - A carboxylic acid is an organic molecule containing a -COOH group. An example of a carboxylic acid is acetic acid.
16.   Catalyst - A catalyst is a substance that lowers the activation energy of a reaction or speeds it up without being consumed by the reaction. Enzymes are proteins that act as catalysts for biochemical reactions.
17.   Cathode - A cathode is the electrode which gains electrons or is reduced. In other words, it is where reduction occurs in an electrochemical cell.
18.   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.
19.   Diffusion - Diffusion is the movement of particles from an area of higher concentration to one of lower concentration.
20.  Dilution - Dilution is when a solvent is added to a solution, making it less concentrated.
21.   Effusion - Effusion is when a gas moves through an opening into a low-pressure container (e.g., is drawn by a vacuum). Effusion occurs more quickly than diffusion because additional molecules aren't in the way.
22.  Electrolysis - Electrolysis is using electricity to break the bonds in a compound to break it apart.
23.  Electrolyte - An electrolyte is an ionic compound that dissolves in water to produce ions, which can conduct electricity. Strong electrolytes completely dissociate in water, while weak electrolytes only partially dissociate or break apart in water.
24.  Family - A family is a group of elements sharing similar properties. It is not necessarily the same thing as an element group. For example, the chalcogens or oxygen family consists of some different elements from the nonmetal group.
25.  Kelvin - Kelvin is a unit of temperature. A Kelvin is equal in size to a degree Celsius, although Kelvin starts from absolute zero. Add 273.15 to a Celsius temperature to get the Kelvin value. Kelvin is not reported with a ° symbol. For example, you would simply write 300K not 300°K.
26.  Ketone - A ketone is a molecule that contains a R-CO-R' functional group. An example of a common ketone is acetone (dimethyl ketone).
27.  Ligand - A ligand is a molecule or ion stuck to the central atom in a complex. Examples of common ligands include water, carbon monoxide, and ammonia.
28.  Mass - Mass is the amount of matter in a substance. It is commonly reported in units of grams.
29.  Nucleon - A nucleon is a particle in the nucleus of an atom (proton or neutron).
30.  Oxidation number The oxidation number is the apparent charge on an atom. For example, the oxidation number of an oxygen atom is -2.
31.   Period - A period is a row (left to right) of the periodic table.
32.  Product - A product is something made as a result of a chemical reaction.
33.  Quantum theory - Quantum theory is the description of energy levels and the predictions about the behavior of atoms at specific energy levels.
34.  Radioactivity - Radioactivity occurs when the atomic nucleus is unstable and breaks apart, releasing energy or radiation.
35.  Strong acid - A strong acid is an acid that completely dissociates in water. An example of a strong acid is hydrochloric acid, HCl, which dissociates into H+ and Cl- in water.
36.  System - A system includes everything you are evaluating in a situation.
37.  Temperature - Temperature is a measure of the average kinetic energy of particles.
38.  Titration - 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.
39.  Unshared electron pair - An unshared electron pair or lone pair refers to two electrons that aren't participating in chemical bonding.
40.  Valence electron - The valence electrons are the atom's outermost electrons.

16 komentar:

  1. in your vocabulary hade alkene and alkynem so can you give me example from that?

    BalasHapus
    Balasan
    1. example from alkene :
      2-butena
      CH3 – CH = CH – CH3

      example from alkyne
      1–pentuna

      CH ≡ C – CH2 – CH2 – CH3

      Hapus
  2. From define Diffusion, Dilution, Effusion. Can you give me a examples about it?

    BalasHapus
    Balasan

    1. Diffusion Example:
      1. When sprinkling salt on food, then the diffusion process that occurs in salt and food is when the salt is melted and evenly distributed.
      2. When spraying perfume in one room, then the aroma will immediately spread throughout the room, because the perfume has particles that diffuse in air

      Example dilution
      For example if we are going to make 500 ml of HCl 2 M using HCl 4 M then the use of the dilution formula is 4 M x V1 = 2 M x 500 ml
      Then V1 = 250 ml, meaning take HCl 4 M as much as 250 ml addkan with water up to 500 ml. On the dilution practice: first enter the water less than 250 ml just added 250 ml of HCl 4 M then live diaddkan with water until the limit of 500 ml of pumpkin.

      Examples of effusions
      When the gas passes through the pin-hole into a low vacuum pressure area, this process
      Called effusions. The rate of gas effusion also depends on the mass of the gas molecule.

      Hapus
  3. Balasan
    1. okay, thanks eka for your question

      Period Number = Number of Atomic Skin

      Example:

      9F: 2, 7 period 2

      Hapus
  4. Can you give me example for radioactivity?

    BalasHapus
    Balasan
    1. Radioactof example in the neighborhood is
      1. Cat Litter
      2. Smoke Detector
      3. Fluorescent Lamp
      4. Gems

      Hapus
  5. please give me example about applications of diffusion in our life

    BalasHapus
    Balasan
    1. Examples of diffusion in everyday life, including:
      1. Freshwater fish placed in the sea water causes the fish body's volume to shrink because the sea water is hypertonic to living organ cells. Consuming seawater causes the body to become dehydrated.
      2. Sprayed perfume will spread throughout the room because it diffuses with air.
      3. Sugar inserted into a hot drink in a glass will spread to the entire volume of glass water even without being stirred because it diffuses in the liquid.

      Hapus
  6. Intan,can you explain the function of alcohol?

    BalasHapus
    Balasan
    1. Alcohol Function

      Here are some of the functions of alcohol in general

      A) As the basic ingredients of synthesis of organic compounds

      B) As a solvent

      C) As the basic material of synthetic detergent such as lauryl alcohol.

      D) As a glass cleaner

      E) For small collection animals alcohol can be used as a preservative.

      F) A mixture of methanol and ethanol is often mixed with gasoline as fuel.

      Hapus
  7. in your vocabulary hade alkene and alkynem so can you give me example from that?

    BalasHapus
    Balasan
    1. example from alkene :
      2-butena
      CH3 – CH = CH – CH3

      example from alkyne
      1–pentuna

      CH ≡ C – CH2 – CH2 – CH3

      Hapus
  8. Please give me an example of the titration that often happens in life?

    BalasHapus
    Balasan
    1. There are many applications and the benefits of acid-base in life either in the environment or in the field of induatri one of the examples of acids and bases in the life of the surrounding environment is acid contained in fruits such as oranges, and bases contained in the soap that we use everyday.

      Hapus