Flashcards
chemistry revision basics
Cards in this deck (15)
- 1what is a molecule?a group of atoms bonded together
- 2what is an atom?a particle that is made up of only itself
- 3what is a simple molecule??a few atoms that are held together by covalent bonds
- 4is sodium chloride a simple molecule?no because it doesnt have any hydrogen in them
- 5what 3 types of particles does a atom have?electrons ,neutrons and protons
- 6what is the centre of the atom called?nucleus
- 7how many can the first shell hold?two electrons
- 8how many can the second shell hold?eight electrons in each
- 9what charge do electrons have?negative charge
- 10what charge does protons have?positive charge
- 11what is the overall charge of an atom?zero
- 12what do covalent bonds share?electrons
- 13true or false ?? does covalent bonding occur between non metals only??true
- 14what is the atomic number??number of electrons,protons
- 15—
Information
- Description
- Flashcards on chemistry revision basics, created by aroob ahmed on 18/01/2017.
- Created by
- aroob ahmed
- Views
- 0
- Rating