CHEMISTRY Y8 - Reactions & Tests

Neutralisation Reaction
1. Acid + Alkali > Salt + Water
2. H+ ions + OH- ions > H2O
3. Hydrochloric Acid + Lead Hydroxide > Lead Chloride + Water
Metal-Acid Reaction
1. Metal + Acid > Metal Salt + Hydrogen
2. Magnesium + Hydrochloric Acid > Magnesium Chloride + Hydrogen
3. Gas being produced - Violent fizzing
4. Temperature change - Bottom of test tube gets warmer
Metal Carbonate-Acid Reaction
1. Metal Carbonate + Acid > Metal Salt + Water + Carbon Dioxide
2. Zinc Carbonate + Sulfuric Acid > Zinc Sulfate + Water + Carbon Dioxide
Squeaky Pop Test
1. 'Squeaky pop' sound is heard when a lit splint is placed in the presence of HYDROGEN GAS
Limewater Test
1. Turns cloudy/milky in the presence of CARBON DIOXIDE GAS
Complete Combustion
1. Hydrocarbon + Oxygen > Carbon Dioxide + Water
2. Enough oxygen for the fuel to burn completely
Incomplete Combustion
1. Hydrocarbon + Oxygen > Carbon Monoxide + Carbon + Water
2. NOT enough oxygen for the fuel to burn completely
Oxidation Reaction
1. Metal + Oxygen > Metal Oxide
2. Iron + Oxygen > Iron Oxide
  1. Iron (solid) will rust reacting with oxygen
3. Magnesium + Oxygen > Magnesium Oxide
  1. Magnesium (very hot) emits energy in the form of a bright white light
  2. Magnesium Oxide - White brittle powder
Displacement Reaction
1. C + A compound > A + C compound
  1. C joins B as it is a more reactive metal than A (displacing A in its compound)
Cobalt Chloride Paper Water Test
1. Cobalt chloride paper turns blue to pink when MOISTURE is added

Resource summary

	Created by Charisse Villarino almost 7 years ago