In this I/GCSE Chemistry blog post, we will understand
- Different properties of metals and non-metals
- The periodic table groupings
An arrangement of the elements according to their atomic number. Most elements in the periodic table are metals(left side). Non-metals are found on the ight of the periodic table.
Properties of Metals:
- Tend to be solid with high melting and boiling points with relatively high densities.
- Form positive ions.
- Conduct heat.
- Good condutors of electricity. Thier oxides are bases.
- They react with acids to give salt and water.
Properties of Non-metals:
- Tend to have low melting and boiling points.
- Tend to be brittle as solids, even if crystalline.
- Form negative ions and covalent compounds.
- Form oxides which are acidic or neutral.
Groups and Periods
A group is a vertical column in the Periodic Table.
Elements in a group have similar chemical properties becuase they have the same number of electrons in their outer shell.
A period is a hortizontal row of elements in the Periodic Table.
Elements show trends in properties across the period, which is repeated in each period.
That's all!
References:
https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.britannica.com%2Fscience%2Fperiodic-table&psig=AOvVaw0iR-u-zA0jaFdp3o-9Mss0&ust=1628054381768000&source=images&cd=vfe&ved=0CAsQjRxqFwoTCMipjquNlPICFQAAAAAdAAAAABAI
https://www.google.com/url?sa=i&url=https%3A%2F%2Figcse-chemistry-2017.blogspot.com%2F2017%2F07%2F118-understand-how-elements-are.html&psig=AOvVaw1ODnih4nBpjAeE2WmVA1XH&ust=1628054849815000&source=images&cd=vfe&ved=0CAsQjRxqFwoTCJi53IuPlPICFQAAAAAdAAAAABAD