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Chemistry Vocabulary



1.      Substance 
A type of matter with a fixed composition.

2.      Solution 
Homogeneous mixture with particles so small that they cannot be seen with a microscope.

3.      Colloid 
Type of mixture with particles that are larger than those in solutions, but not heavy enough to settle out.

4.      Tyndall Effect 
Scattering of light by colloidal particles.

5.      Suspension 
Heterogeneous mixture containing a liquid where visible particles settle.

6.      Physical Property 
Characteristic of a material you can observe without changing the identity.

7.      Physical Change 
A change in size, shape, or state.

8.      Distillation 
A process for separating substances by evaporating a liquid and recondensing its 
vapor.

9.      Chemical Property 
Characteristic of a substance that indicates whether it can undergo a chemical 
change.

10.  Chemical Change 
A change of one substance to another.

11.  Kinetic Theory 
Explanation of how particles in matter behave.

12.  Melting Point 
The point in temperature when the solid starts to liquefy.

13.  Heat of Fusion 
The energy required to change a substance from a solid to a liquid at its melting 
point.

14.  Boiling Point 
The point in temperature when the liquid starts to boil.

15.  Heat of Vaporization 
Amount of energy required for a liquid to become a gas.

16.  Viscosity 
The resistance to flow by a fluid.

17.  Pascal 
Used to measure pressure.

18.  Quarks 
Smaller particles in neutrons and protons.

19.  Electron Cloud 
Area around a nucleus where electrons are mostly found.

20.  Isotopes 
Atoms of the same element that have different numbers of neutrons.

21.  Periodic Table 
A table filled with elements in order of atomic numbers, etc.

22.  Groups 
The vertical columns in the periodic table.

23.  Periods 
Horizontal rows of elements.

24.  Metals 
Good conductors of heat and electricity.

25.  Metallic Bonding 
Positively charged metallic ions surrounded by a electron cloud.

26.  Nonmetals 
Usually gasses or brittle solids at room temperature.

27.  Diatomic Molecule 
Consists of 2 atoms of the same element in a covalent compound.

28.  Sublimation 
The process of a solid going directly into a vapor.

29.  Metalloids 
Has properties of both nonmetals and metals.

30.  Allotropes 
Different forms of the same element

31.  Semiconductors 
Elements that conduct under circumstances.

32.  Chemical Bond 
Force that holds atoms together in a compound.

33.  Ionic Bond 
Force of attraction between opposite charges.

34.  Covalent Bond 
Attraction formed when elements share electrons.

35.  Oxidation Number 
Tells you how many electrons an atom has gained or lost.

36.  Polyatomic Ion 
Positively or negatively charged, covalently bonded group.

37.  Chemical Reaction 
More than one substances turning into other substances.

38.  Coeffecients 
Numbers in front of each substance in a equation.

39.  Combustion Reaction 
Substance reacts with oxygen to make heat and light.

40.  Synthesis Reaction 
2 or more substances that combine to make another.

Komentar

  1. Unknown22 April 2017 pukul 04.04

    Hiii mute,,, thanks for your science :), but i want to ask you,What do you think metaloid is? And give examples of metals and non metals

    BalasHapus
    Balasan
    1. Mutia22 April 2017 pukul 16.46

      Hello novi, i think metalloids is properties intermediate between the metals and nonmetals.
      The examples of metals are gold, copper, iron etc. and nonmetals are oxygen, hydrogen, nitrogen etc. :)

      Hapus
  2. Unknown22 April 2017 pukul 04.20

    Can you give me the example of solution?

    BalasHapus
    Balasan
    1. Mutia22 April 2017 pukul 16.50

      • An example of a solid solution is brass
      • An example of a liquid solution is aqueous hydrochloric acid (HCl in water)
      • An example of a gaseous solution is air

      Hapus
  3. guru2 Mei 2017 pukul 06.24

    what is polyatomic ion?

    BalasHapus
    Balasan
    1. Mutia3 Mei 2017 pukul 06.59

      A polyatomic ion, also known as a molecular ion, is a charged chemical species (ion) composed of two or more atoms covalently bonded or of a metal complex that can be considered to be acting as a single unit. The prefix poly- means "many," in Greek, but even ions of two atoms are commonly referred to as polyatomic. In older literature, a polyatomic ion is also referred to as a radical, and less commonly, as a radical group. In contemporary usage, the term radical refers to free radicals that are (not necessarily charged) species with an unpaired electron

      Hapus
  4. Atmajun123.blogspot.com22 Mei 2017 pukul 07.48

    Could you explain to me about melting point?

    BalasHapus
    Balasan
    1. Mutia22 Mei 2017 pukul 07.53

      melting point, temperature at which the solid and liquid forms of a pure substance can exist in equilibrium. As heat is applied to a solid, its temperature will increase until the melting point is reached. More heat then will convert the solid into a liquid with no temperature change. When all the solid has melted, additional heat will raise the temperature of the liquid. The melting temperature of crystalline solids is a characteristic figure and is used to identify pure compounds and elements. Most mixtures and amorphous solids melt over a range of temperatures

      Hapus
  5. Unknown23 Mei 2017 pukul 00.50

    Give a sample of metalloids

    BalasHapus
    Balasan
    1. Mutia23 Mei 2017 pukul 00.53

      Examples are silicon, germanium, arsenic, antimony, tellurium, and polonium.

      Hapus

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