IGCSE Edexcel Chemistry: 1c Atomic Structure and the Periodic Table - Correct questions and answers

IGCSE Edexcel Chemistry: 1c Atomic Structure and the Periodic Table -
Covid updated
atom - ANSthey make up everything



What are atoms made of? - ANSprotons, neutrons, electrons



What is a proton? - ANSpositively charged particle found in the nucleus with a mass of 1



What is a neutron? - ANSa particle that has no charge and that is inside the nucleus and has a mass of 1



What is a molecule? - ANSA group of atoms bonded together



What is the nucleus of an atom? - ANSprotons and neutrons in the centre of the atom; contains most of
the mass of an atom



element - ANSA pure substance made of only one kind of atom



What is an electron? - ANSnegatively charged particle located in the space surrounding the nucleus with
hardly any mass



atomic number - ANSthe number of protons in an atom; the number that identifies an element



mass number (atomic mass) - ANSthe total number of protons and neutrons in the nucleus of an atom



How many neutrons? - ANSmass number (atomic mass) - atomic number



Number of electrons? - ANSsame as the number of protons in a neutral atom.