Mates & Física y Química en casa

Hello everyone, As I told you, I am going to use this blog to attach some of the summaries and images that you don't have in your regular textbook. I really hope they are useful to study the chemical bond. An atom is stable if the outermost shell has 8 electrons (we call it an octet ) Only the atoms in the 18th group has it , the rest must : - SHARE electrons GIVE them away or TAKE them from other atoms . When this happens , they form a BOND A BOND IS THE FORCE OF ATTRACTION THAT KEEPS TWO OR MORE ATOMS  TOGETHER The outer shell of noble gases is completely fulfilled with electrons , so they  are   not likely to form any bond IONIC BOND. It happens when two atoms interact : - One of the atoms loses electrons - The other gains electrons That way , both reaches the configuration of a noble gas It happens generally between a metal and a non-metal. When the atoms co...

Hello everyone! As I always do, I upload here the videos we have watched about adding and subtracting decimal numbers, as well as the one about multiplication Enjoy

Happy new year to everyone! Here I upload the videos we will need to understand how to multiply and divide fractions. Remember these are the basic rules, and that you need to revise what else we have learnt during the lesson