Compounds
Compounds that make the Colours in Fireworks
Lithium carbonate, Li2CO3 = red
Calcium chloride, CaCl2
Calcium sulfate, CaSO4·xH2O, where x = 0,2,3,5
Sodium nitrate, NaNO3
Cryolite, Na3AlF6
Barium oxide, BaO
Barium chloride, BaCl+ = bright green
Copper acetoarsenite (Paris Green), Cu3As2O3Cu(C2H3O2)2 = blue
Copper (I) chloride, CuCl = turquoise blue
Burning aluminum, titanium, or magnesium powder or flakes
What is a Compound?
A compound is basically a molecule that contains at least two different element that are chemically bonded together. All compounds are molecules but not all molecules are compounds. Therefore, all compounds have two or more different elements that are bonded together. These include: water (H2O), carbon dioxide (C2O), methane (CH4), and several more. On the other hand, molecules are made up of two or more elements bonding together. These include: hydrogen (H2), oxygen (O2), and several more. However, not all molecules have two different elements. For example, hydrogen or oxygen contain two of the same element, therefore making molecules but not making compounds. This is because some molecules consist the same element. A compound is a completely new substance that will have completely different properties than the elements that made it. For example, the element sodium is highly reactive and explodes when reacts with water. The element chlorine is a yellowish-green gas that is poisonous. When these two elements react together they form sodium chloride (NaCl). Sodium chloride is not poisonous like chlorine, it doesn't explode when reacted to water, like sodium, however, it is common table salt that we eat in our everyday lives. The elements that have been reacted cannot be separated using physical methods. They can only be separated using more chemical reactions or by passing electricity through it, however, this can only be done if it conducts electricity.
Examples of Compounds
There are several examples of compounds. These compounds have a common name that we use to identify them, for example, NaCl is salt. The following list labels the chemical formula of the compound and the common name that we use to identify the compound:
- Red
Lithium carbonate, Li2CO3 = red
- Orange
- Gold
Calcium chloride, CaCl2
Calcium sulfate, CaSO4·xH2O, where x = 0,2,3,5
- Yellow
- Electric White
Sodium nitrate, NaNO3
Cryolite, Na3AlF6
- Green
Barium oxide, BaO
- Blue
Barium chloride, BaCl+ = bright green
- Purple
Copper acetoarsenite (Paris Green), Cu3As2O3Cu(C2H3O2)2 = blue
Copper (I) chloride, CuCl = turquoise blue
- Silver
Burning aluminum, titanium, or magnesium powder or flakes
What is a Compound?
A compound is basically a molecule that contains at least two different element that are chemically bonded together. All compounds are molecules but not all molecules are compounds. Therefore, all compounds have two or more different elements that are bonded together. These include: water (H2O), carbon dioxide (C2O), methane (CH4), and several more. On the other hand, molecules are made up of two or more elements bonding together. These include: hydrogen (H2), oxygen (O2), and several more. However, not all molecules have two different elements. For example, hydrogen or oxygen contain two of the same element, therefore making molecules but not making compounds. This is because some molecules consist the same element. A compound is a completely new substance that will have completely different properties than the elements that made it. For example, the element sodium is highly reactive and explodes when reacts with water. The element chlorine is a yellowish-green gas that is poisonous. When these two elements react together they form sodium chloride (NaCl). Sodium chloride is not poisonous like chlorine, it doesn't explode when reacted to water, like sodium, however, it is common table salt that we eat in our everyday lives. The elements that have been reacted cannot be separated using physical methods. They can only be separated using more chemical reactions or by passing electricity through it, however, this can only be done if it conducts electricity.
Examples of Compounds
There are several examples of compounds. These compounds have a common name that we use to identify them, for example, NaCl is salt. The following list labels the chemical formula of the compound and the common name that we use to identify the compound:
- H2O - Water
- C6H12O6 - Glucose
- C2H6O - Alcohol
- NaCl - Salt
- C2H6O - Ethanol
- C2H4O2 - Vinegar
- NH3 - Ammonia
- C2H4O2 - Acetic Acid
- C4H10 - Butane
- H2SO4 - Sulfuric Acid
- CH4 - Methane
- C12H22O11 - Sucrose
- C3H8 - Propane
- NaHCO3 - Baking Soda
- N2O - Nitrogen
- C6H8O7 - Citric Acid
- C8H18 - Octane
- C10H16O - Camphor
Watch this video to learn more about chemical compounds.