Term
| What is chlorine (Cl2) used for? |
|
Definition
Water treatment to stop diseases Making plastics, e.g. PVC CFCs |
|
|
Term
| What is Bromine (Br2) used for? |
|
Definition
|
|
Term
| What is Iondine (I2) used for? |
|
Definition
Preventing thyroid disease (through diet) The starting materials for the manafacture of: medicines photographic chemicals dyes |
|
|
Term
| Describe the reaction of between sodium (Na) and chlorine (Cl2) |
|
Definition
Hot sodium burns with a bright yellow flame. It priduces clouds of white sodium chloride crystals (NaCl). It's a vigorous reaction |
|
|
Term
What does the name halo-gen mean? |
|
Definition
|
|
Term
| What two things can the halogens do? |
|
Definition
| Bleach things and kill bacteria |
|
|
Term
| ALL alkali metals react with chlorine to give what product? |
|
Definition
MCl Where M = alkali metal and Cl = chlorine |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
| What does (aq) stand for? |
|
Definition
| Aqueous - dissolved in water |
|
|
Term
|
Definition
|
|
Term
| What is the balanced equation for alkali metals and water? |
|
Definition
2M(s) + 2H2O(l) -----> 2MOH(aq) + H2 (g) Where M = alkali metal |
|
|
Term
| What is the balanced equation for alkali metals and halogens? |
|
Definition
2M(s) + Ha2 (l) -----> 2MHa(s) Where m= alkali metal and Ha = halogen |
|
|
