8.4 Flashcards
What are five features of acids?
Acids:
- Sour tasting
- Tend to react with metals
- Have at least one H^+ ion
- Burning sensation on contact with skin
- Acids have a low pH
What are 3 examples of strong acids?
- Hydrochloric acid
- Sulfuric acid
- Nitric acid
What is an example of a weak acid?
- Ethanoic acid
What are five features of bases?
Bases: - Chemical opposite of acids - Bitter taste - Feel slippery to touch - pH of higher than 7 - Bases that dissolve in water = alkalis Solutions formed by these soluble bases (alkalis) = alkaline solutions
What is an example of a strong and weak base?
(strong) Sodium Hydroxide, (weak) Ammonia
What is the scientific formula for:
- Hydrochloric acid
- Sulfuric acid
- Nitric acid
Scientific formulas:
- HCl
- H₂SO₄
- HNO₃
What is the scientific formula for:
- Sodium Hydroxide
Scientific formula:
NaOH
What is called when acid and bases react?
Neutralisation.
They produce water and a salt
What is the equation for acid and metal?
Acid + metal -> hydrogen + salt
What is the equation for acid and base?
Acid + base -> water + salt
What is the equation for acid and metal carbonate?
Acid + metal carbonate -> carbon dioxide + water + salt
What is an advantage or acid metal reaction?
Used for jewllery
What is an disadvantage or acid metal reaction?
Acid rain
How does acid rain occur?
As rainwater falls, it can dissolve CO2 from the atmosphere
What does acid rain do?
It can corrode building materials, marble and limestone.
