Metals And Reactivity Flashcards
What are the seven physical properties of metals?
Solids at room temperature (except mercury) Hard and dense Good conductors of heat and electricity Sonorous- makes a bell like sound Ductile- can be drawn into wires Malleable- can be hammered into sheets Lustrous- shiny when freshly cut
What is the structure of a metal?
Most metals are solids at room temperature
Many metals are dense
Metal conducts electricity
What is it called when a metal is reacted with oxygen?
Oxidation
What is the word equation between calcium and oxygen?
Calcium+oxygen-calcium oxide
What colour does calcium burn with?
A red flame
What colour does magnesium burn with?
A white flame.
Why is sodium stored under oil?
Because it reacts with both air and water.
When sodium is reacted with water what happens?
It fizzes,floats,moves,melts, eventually disappears. The reaction is:
Sodium+water-Sodium Hydroxide+hydrogen
When Potassium is reacted with water what happens?
It floats, fizzes, moves, melts, bursts into a lilac flame.
The equation goes as follows:
Potassium+water-Potassium Hydroxide+Hydrogen
What changes are noted when calcium is put into water?
Calcium sinks, bubbles of gas are produced, the solution turns cloudy as a white solid is formed and the solution becomes warm.
How does Hydrochloric acid react with magnesium?
It starts bubbling. Magnesium disappears.
Hydrogen is given off
The reaction is very fast
How does Hydrochloric acid react with zinc?
Bubbles of gas produced and heat is given out
Hydrogen is given off
The reaction is moderately fast
How does Hydrochloric acid react with aluminium?
Reaction slow due to the protective oxide layer and frogmen is given off.
How does Hydrochloric acid react with copper?
No reaction. Hydrogen is not given off.
How does Hydrochloric acid react with iron?
Bubbles, little bit of heat.
Hydrogen is given off
Reaction is slow
Rank magnesium, zinc, copper, iron and aluminium in the correct order of reactivity.
Magnesium Aluminium Zinc Iron Copper
What Is the word equation for when zinc is reacted with Hydrochloric Acid?
Zinc+Hydrochloric Acid-zinc chloride+hydrogen
What Is the word equation for when magnesium is reacted with Hydrochloric Acid?
Magnesium+Hydrochloric acid- magnesium chloride+hydrogen
What Is the word equation for when copper is reacted with Hydrochloric Acid?
No reaction
What Is the word equation for when aluminium is reacted with Hydrochloric Acid?
Aluminium+Hydrochloric acid- aluminium chloride+ hydrogen
What Is the word equation for when iron is reacted with Hydrochloric Acid?
Iron+Hydrochloric Acid-Iron Chloride+Hydrogen
When does corrosion occur?
Corrosion occurs when metals react with substances in their surroundings.
What is rust?
Rusting is the corrosion of iron.
What happens to the mass of iron when it rusts?
It increases.
This is because the iron has combined with oxygen and water to form rust.
