Reactions of metal with dilute acids Flashcards
How do you test for hydrogen gas?
Hold a burning splinter near the gas.
What is the positive result of a hydrogen gas test?
A ‘pop’ sound is heard.
How can you compare the reactivity of calcium and magnesium?
More bubbles = more reactive.
When a metal reacts with a dilute acid, what does it produce?
A salt
Hydrogen gas
What is the general word equation for the reaction of a metal with acid?
Metal + Acid → Salt + Hydrogen
What happens when magnesium reacts with dilute hydrochloric acid?
Magnesium reacts with dilute hydrochloric acid to form magnesium chloride and hydrogen gas.
What is the word equation for magnesium reacting with hydrochloric acid?
Magnesium + Hydrochloric Acid → Magnesium Chloride + Hydrogen
What is observed during the reaction of magnesium with hydrochloric acid?
Effervescence (bubbling) due to hydrogen gas production.
What happens to magnesium as it reacts with hydrochloric acid?
Magnesium dissolves as it reacts.
What type of reaction is magnesium with hydrochloric acid?
The reaction is exothermic (releases heat).
How can you test for hydrogen gas in this reaction?
If tested with a burning splinter, the hydrogen gas gives a ‘pop’ sound.
What is a salt?
A salt is a compound formed when a metal replaces the hydrogen in an acid.
