Question

Q1. Very short answer questions (1 mark each)
1) What is the full form of IUPAC?
2) Define law of conservation of mass and law of constant proportion.
3) Explain the difference between 2 'O' and O2
4) Calculate the molecular mass of glucose. CsH1206
5) What is the atomicity of the following ? Oxygen, Ozone, Neon, sulphur, Phosphorus and
Sodium
Q.2 Short answer type questions (2 marks each)
1) How will you justify that the following are compounds and not elements? Sugar, water and
Iron sulphide
2) Which has more number of atoms? 100 gm of Nz or 100 gm of NH3. Prove using
Calculations​

Answer 1

Answer:

Q1] VSAQ

1] international union of pure and applied chemistry

2] law of conservation of mass states that mass of an isolated system is nighter be distroy nor b created by any of the reaction of phycsical interaction or any of the chemical reaction

law of constant proportion stats the the any substance of chemical elements have definate proportion

3] actually we can not write 2O but to unterstand 2O is can be written for 2 mole of oxygen and O2 is the paird molecule as oxyge basically found in pair only

4] molecular mass of glucose is 180

5] atomicity of = oxygen is 2 , ozone is 3 neone is 1 , sulphur is 8 , phosphorus is 4 and sodiun is 1

Explanation: