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Water
| Question | Answer |
|---|---|
| What tempeture does it freeze at? | Freezes 0 degluis celsius |
| What it turn into ? | solid ice |
| What substance dissolves? | Calcium and Mangesium |
| What happens when it freezes? | Expands |
| Whats the checimal frouma for water? | H2O |
| What the density? | Ig/cm cubed |
| What water molecules? | Clings together forming bonds. More attacted to the container side than each other and this creates... |
| What menisus layer? | When it creates water molecules |
| What is the test of water? | Snhydrous Copper Sulphate white to blue Cobalt Chloride blue to pink |
| What is screening? | Pass through a grid or screen and remove large debris |
| Settling? | Settling in a tank add aluminium sulphate. Small particcles clump together? |
| Filtration | Passed throuugh sand and rocks filter beds Removes dirt |
| Chl;orations | Kill bacteria |
| Fluration | helps tooth decay |
| Hard what is caused .... | calcium and magnesium |
| ions are? | Calcium and chloride ion. |
| What is insouble ? | CALCIUM CARBONBATE |
| Rainwater acts on limewater because? | to produce Calcium hydrocarbonate |
| Dissolves calcium carbonate is | acidic |
| Boiling Calcium Hydrocarborboneate turns | Liquid to a solid. |
| whats limesclae | liquis to a solid |
| Advanages of water | Healthy bones and teeth tastes nicer goodbrewing |
| disadvantages of water | Blocks pipes produces lime scale Doesnt lather soap so it produce scum |
| What is electroylsis | use of electricity cause a checimal change |
| what is used to split water | Hofmann voltameter |