Electrochemistry
What is the non-metal solid used for electrode?
Carbon / Graphite
Which homologous series does ethene belong to?
Alkene
What is the percentage of Nitrogen gas in air?
What is found in the nucleus of an atom?
Protons and neutrons
What's everyone's name in the room
=v=
What carries the charge through the wire in the electrolysis?
Electrons
What is the test carried out to distinguish between alkane and alkene?
What is the formula for quicklime?
CaO
Name a neutral oxide.
carbon monoxide
What is Tuesday in Japanese?
火曜日
What is the factor which determines the voltage produced in a voltaic cell?
difference in reactivity of metals
What type of reaction turns alcohol to carboxylic acid?
Oxidation
Which gas is used to kill microbes in water?
chlorine or ozone
How could you separate sand from salt?
dissolve in water and filter
What is Ms Linda's favorite color?
Green
What would be the observation on anode when molten iron bromide is electrolysed?
red fume/ bubbles
What is needed to turn alkene into alkane?
hydrogen gas, Ni and 150 degree Celcius
Name 2 pollutants which cause acid rain
sulfur dioxide and nitrogen oxides
6.02X 10^23
How many teeth does a blue whale have?
0
What are the 3 useful products produced when concentrated sodium chloride solution is electrolysed?
Hydrogen gas, chlorine gas and sodium hydroxide
acid/ heat and hydrolysis
Describe 2 uses of limestone in industry
1. Extraction of iron - reacts away acid impurities
2. neutralise acidic soil
Explain why increase in temperature increases rate of reaction.
Increase in frequency of successful collisions
What is pearl in milk tea made from?
Cassava