sorry only realised there was categories

Random

100

What is the lightest element in the periodic table? 

Helium, my dude! 

200

The law which states that the amount of gas dissolved in a liquid is proportional to its partial pressure is?

Henry's law 

300

The metal that is usually extracted from sea water is?

magnesium 

400

The most abundant rare gas in the atmosphere is?

Argon 

Random

100

What is the heaviest element in the periodic table?

Uranium, my dude 

200

The formula C6H5-CO-CH3 represents?

Acetophenone 

300

what are atoms? 

An atom is the smallest recognised division of a chemical element and is made up of three particles: the proton, neutron and electron.

500

The material which can be deformed permanently by heat and pressure is called a?

thermoset

Random

100

What is the most electropositive element on the periodic table? 

Cesium

200

What is an Alloy? 

Alloys are mixtures containing at least one metal. We use metals for many jobs in our technological world and sometimes a metallic element just won't cut it.

300

What is the most electronegative element on the periodic table? 

flourine

400

The molecular formula of phosphorous is?

P4 

Random

100

The octane number of zero is assigned to?

n-heptane 

200

What is the most common isotope of hydrogen? 

protium

300

The method of concentrating the ore which makes use of the difference in density between ore and impurities is called?

levigation

400

what is an acid?

acid is any substance that has pH of less than 7

Random

100

The major constituent of air is

nitrogen 

200

The maximum number of isomers for an alkene with molecular formula C4H8 is?

4

300

What are the number of moles of CO2 which contains 16 g of oxygen?

0.5 mole 

400

The mass of one Avogadro number of helium atom is?

4 gram