Chemistry Unit 1- fundamental ideas
HideShow resource information
- Created by: safia rassool
- Created on: 18-05-16 10:18
Fullscreen
- An atom is the smallest particle in the world, they make up everything
- An element is made up of one type of atom
- The periodic table is organised into groups and in these groups elements have similar properties
- A compound is two or more elements chemically joined
- In an atom there is a nucleus surrounded by electrons (NEGATIVE CHARGE)
- in the nucleus there is neutrons (NO CHARGE) and protons (POSITIVE CHARGE)
- an atom has no overall charge because the number of protons is equal to the number of electrons
- Atomic number of an element is the proton number and the number of electrons as theyre the same
- Elements are…
Comments
No comments have yet been made