AQA GCSE Combined Science: Trilogy (8464) — Chemistry — Higher · 5.4.2.1

Reactions of acids with metals Flashcards – AQA GCSE Combined Science: Trilogy (8464) — Chemistry — Higher

Revise AQA GCSE Combined Science: Trilogy (8464) — Chemistry — Higher specification point 5.4.2.1, Reactions of acids with metals, with free active-recall flashcards. Flip through the set or review every question and answer below.

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Cards in this set (8)

What is the general word equation for a reaction between a metal and an acid?

Metal + acid → salt + hydrogen

What does the metal replace in an acid–metal reaction?

Hydrogen from the acid.

Which types of salt are formed by hydrochloric acid and sulfuric acid?

Hydrochloric acid forms chlorides; sulfuric acid forms sulfates.

Which three metals are studied in reactions with hydrochloric and sulfuric acids?

Magnesium, zinc and iron.

Write the balanced symbol equation for magnesium reacting with hydrochloric acid.

$\ce{Mg + 2HCl -> MgCl2 + H2}$

Write the balanced symbol equation for zinc reacting with sulfuric acid.

$\ce{Zn + H2SO4 -> ZnSO4 + H2}$

What happens to metal atoms during a redox reaction with an acid?

They lose electrons to form positive metal ions, so the metal is oxidised.

What happens to hydrogen ions during a redox reaction between an acid and a metal?

They gain electrons to form hydrogen gas, so the hydrogen ions are reduced.