Chemical Changes Flashcards
1
Q
What type of reactions occur when making metal oxides?
A
oxidation reactions (metals gain oxygen)
2
Q
Equation for metal oxides?
A
MAWS
Metal oxide + Acid -> Salt + Water
3
Q
Most reactive metal?
A
potassium
4
Q
What is neutralisation?
A
when pH moves closer to 7
- acid + alkali -> salt + water
- acid= H+ ions (hydrogen)
- alkali= OH- ions (hydroxide)
- H+ + OH- -> H20
5
Q
What kind of compounds are salts?
A
ionic compounds
6
Q
3 Different Acids?
A
- Hydrochloric acid (HCI)
- Sulfuric acid (H2SO4)
- Nitric acid (HNO3)
7
Q
Acid reactions (HCI, H2SO4, HNO3)?
A
MASH!!
- Zinc + HCI -> Zinc chloride + hydrogen
- Iron + H2SO4 -> Iron sulfate + hydrogen
- Tin + HNO3 -> Tin nitrate + hydrogen
8
Q
Metal Carbonate reactions?
A
Metal carbonate + Acid -> salt + CO2 + water
- Tin carbonate + HCI -> Tin chloride + CO2 + water
