Flashcards
Chemistry
Flashcards do conjunto (11)
- 1Chemistry: What is oxidisation?The gaining of oxygen
- 2Chemistry: What is reduction?The loss of oxygen
- 3Chemistry: Why are alloys stronger than pure metals?They have different sized atoms which makes it harder for the atoms to move over each other, so the alloys are harder
- 4Chemistry: Why is it important to recycle metals?Uses less resources
Uses less energy
Uses less money
Makes less rubbish - 5Chemistry: What is the test for an alkene?Bromine water + alkene=decolourised
- 6Chemistry: What is the test for an alkane?Bromine water + alkane=still brown.
- 7Chemistry: When calcium oxide reacts with water, what does it produce?Calcium hydroxide
- 8Chemistry: What is the test for... Hydrogen Oxygen ChlorineHydrogen makes a squeaky pop with a lighted splint
Oxygen will relight a glowing splint if the gas is present
Chlorine will bleach damp blue litmus paper, turning it white - 9Chemistry: What does electrolysis mean?Splitting up with electricity
- 10Chemistry: When does complete combustion happen?When there's plenty oxygen
- 11Chemistry: When does incomplete combustion happen?When there's not enough oxygen