Lesson 6 : Neutralisation Flashcards
What ions do acids produce when dissolved in water?
H⁺
What ions do alkalis produce when dissolved in water?
OH⁻
What is the general equation for neutralisation?
Acid + Alklai —–> Salt + water
What does sodium hydroxide+ hydrochloric acid form?
Sodium chloride + water
What 2 bases form a salt + water when they react with an acid?
Acid + Alkali (metal hydroxide) —-> salt + water
Acid + Alkali (metal oxide) —–> salt + water
What 3 substances are usually bases?
- All metal oxides
- Some metal hydroxide
- All metal carbonate
What is a carbonate?
A carbonate contains one carbon atom, 3 oxygen atoms. CO₃
What does magnesium carbonate+ hydrochloric acid form?
Magnesium chloride+ carbon dioxide+ water
What is the general equation for an acid + metal carbonate?
Salt + water + carbon dioxide
What is neutralisation?
- A chemical reaction in which an acid reacts with an alkali or a base to form salt and water.
What type of reaction is neutralisation?
- Exothermic.
- Energy is released to the surroundings (heating the solution up.)
What is a salt in chemsity?
- A salt is a substance formed when metal ions replace hydrogen ions.
What are reactants?
Reactants are the chemicals present at the start of a reaction.
What are products?
Products are chemicals made after a chemical reaction.
What is an acid?
An acid is a substance with a pH less than 7 that can be dissolved in water to form H⁺ ions.
