Reactions Of Some Metals With Water Flashcards
What is the reaction like with magnesium and water
No reaction No change in colour Minor fizzing Not visible Universal indicator went green Neutral
Is there any connection between how reactive a metal is and where it is in the periodic table?
The more lower down the more reactive the metal, they are All in groups
When sodium reacts with water, what is the. Amen of the solution formed?
Sodium hydroxide
Fizzing suggests that a gas is being let off, name the gas?
Hydrogen
Write a word equation for sodium hydroxide
Sodium+ oxygen > hydrogen = sodium hydroxide
What can you say about colours of compounds of alkali metals?
They are all white
What can you say about the solubility of the compounds of alkali metals?
All the compounds dissolve
Which alkali metals have a PH well above 7?
Potassium carbonate and lithium carbonate
What are the flame colours to these alkali metals? Sodium chloride? Potassium sulphate? Sodium nitrate? Potassium carbonate? Lithium carbonate?
Orange Lilac Orange Lilac Lilac
What causes the alkali metals to produce different colours in flame tests?
Metals and metal salts are heated in a flame, the flame becomes highly coloured, these colours are due to the electrons getting then dropping back the ground state
What is the gas when metal reacts with an acid?
Hydrogen
Aluminium + nitric acid =
Aluminium nitrate + hydrogen
Magnesium + lead nitrate solution
Magnesium nitrate solution + lead
How could you show if a solution was a metal
If it conducts electricity
Explain the reaction of calcium with water?
Quick reaction Change in colour Lots of bubbles Universal indicator turns blue Gas let off was hydrogen
