100781
| Questão | Responda |
| Describe the test for chlorine gas | damp blue litmus paper --> (red) --> white. it is bleached |
| Describe the test for hydrogen | lighted splint in tube full of a gas... if it makes a 'squeaky pop' Then hydrogen is your gas! |
| Describe the test for oxygen | glowing splint in test tube of gas... if the splint relights .... oxygen is your gas! (not mine) |
| What product is made in the electrolysis of salt? | chlorine gas |
| What products are made in the electrolysis of water? | hydrogen and oxygen |
| what is the product usually produce? | gas |
| what is the neutralisation reaction equation? | acid + base --> salt + water |
| what acid does the stomach produce? | hydrochloric acid |
| Why does the stomach produce HCL? | to help with digestion |
| When you have too much hydrochloric acid in the stomach, what do you get? | indigestion |
| how do you control indigestion? | take tablets which contain bases such as calcium carbonate, this neutralises the excess acid, turning it into water |
| what are bases? | a metal hydroxide/ oxide |
| what are the equations for hydroxide and oxide? | acid + metal oxide --> salt + water acid + metal hydroxide --> salt + water |
| Try these: Hydrochloric acid + copper oxide -->? Sulfuric acid + calcium hydroxide -->? nitric acid + potassium hydroxide-->? BOYS DO BALANCED SYMBOL EQUATIONS!!! | hydrochloric --> copper chloride + water sulfuric --> calcium sulfate + water nitric acid --> potassium nitrate water |
| acid + carbonate --> .....+........+.... | salt + water+ carbon dioxide |
| hydrochloric acid + sodium carbonate --> sodium......... +.........+......... GUYS...SYMBOLS! | chloride + water +carbon dioxide |
| What does electrolysis mean? | "splitting up with electricity" (the bwig bwully! :S) |
| what is an electrolyte | the liquid required to conduct electricity |
| what is an electrode? | it is were the electricity is applied to the elctrolyte |
| you must ALWAYS have a ........... current in electrolysis | DIRECT! heehee! |
| What is the symbol for oxidizing -what does it mean? | a circle with a flame above it. It means provides oxygen which allows other materials to burn more fiercely. |
| What is the symbol for highly flammable? What does it mean? | flame - catches fire easily |
| what is the symbol for toxic? What does it mean? | Skull and cross bones - can cause death either by swallowing, breathing in, or absorption through the skin. |
| what is the big X with the little 'h' stand for? | HARMFUL - like toxic but not quite as dangerous |
| what does the big 'X' with the little 'i' stand for? | CORROSIVE - attacks and destroys living tissues, including eyes and skin. |
| What pH does a strong acid have? | 0/1 |
| What pH does a strong base have? | 14 |
| what is the pH for neutral? | 7 |
| what colours are in the acid range? | from red to light green/yellow |
| what colours are in the range for bases? | From blue to dark purple |
| How Did You Do? :> | DESPICABLE! TRY AGAIN |
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