Chemistry

laurenfaye
Flashcards by laurenfaye, updated more than 1 year ago
laurenfaye
Created by laurenfaye over 5 years ago
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Question Answer
Chemistry: What is oxidisation? The gaining of oxygen
Chemistry: What is reduction? The loss of oxygen
Chemistry: 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
Chemistry: Why is it important to recycle metals? Uses less resources Uses less energy Uses less money Makes less rubbish
Chemistry: What is the test for an alkene? Bromine water + alkene=decolourised
Chemistry: What is the test for an alkane? Bromine water + alkane=still brown.
Chemistry: When calcium oxide reacts with water, what does it produce? Calcium hydroxide
Chemistry: What is the test for... Hydrogen Oxygen Chlorine Hydrogen 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
Chemistry: What does electrolysis mean? Splitting up with electricity
Chemistry: When does complete combustion happen? When there's plenty oxygen
Chemistry: When does incomplete combustion happen? When there's not enough oxygen
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