1 Importance of Chemistry in our daily lifeBy : Areej Aslam Hiba Amjad Mariam Tanveer

2 Introduction We experience a lot of situations in our daily life which relate to chemistry. Its just that all of those experiences were left unnoticed, but now we can relate !

3 Elements of the Periodic TableContents Changes of Matter Elements of the Periodic Table Power of Hydrogen

4 Changes of matter It is a physical change when there is a change of state in solid, liquid or gas. The substance changes its state by either gaining or losing energy. It involves the following changes : Boiling = Liquid to gas Melting = Solid to Liquid Subliming = Solid to Gas Condensing = Gas to Liquid Freezing = Liquid to Solid Deposition = Gas to Solid

5 Changes of matter cont. Boiling = Liquid to gasMelting = Solid to Liquid

6 Changes of matter cont. Subliming = Solid to GasCondensing = Gas to Liquid

7 Changes of matter cont. Freezing = Liquid to SolidNow we are able to relate the physical changes happening around us all the time

8 Elements of the Periodic TableHydrogen Nitrogen Calcium Neon Oxygen Copper Tin Iron Silver Gold Magnesium Aluminum Mercury Helium

9 Power of Hydrogen pH measures the hydrogen ion concentration, we can determine whether solutions are acidic , basic or neutral.

10 Power of hydrogen Water – 6.8 – 7.3 Urine - 4.6 - 8 Milk – 6.5 – 6.7Stomach Acid – 1 Coffee – 3 Baking soda – 12 Blood Skin – 5.5

11 Thank YOU Any questions?