Combined Science Chemistry C1 - Atoms 0.0 / 5 ? ScienceChemistryAtomsGCSEAll boards Created by: liv_hollieCreated on: 29-03-18 19:49 What do atoms contain? Protons, neutrons and electrons 1 of 20 NUCLEUS . 2 of 20 Where is the nucleus? In the middle of the atom 3 of 20 What is in the nucleus? It contains protons and neutrons 4 of 20 What is the radius of the nucleus? 1 x 10 ^-14 5 of 20 What charge does the nucleus have? It has a positive charge because of the protons 6 of 20 Mass Almost the whole of the mass of the atom is concentrated in the nucleus 7 of 20 ELECTRONS . 8 of 20 Where do electrons move? Around the atom shells 9 of 20 What is the charge of an electron? They're negatively charged 10 of 20 How big are electrons? Tiny, but they cover a lot of space 11 of 20 The volume of their orbits... Determine the size of the atom 12 of 20 What is the mass of an electron? They have virtually no mass 13 of 20 What is the overall charge of an atom? Atoms are neutral 14 of 20 Why are atoms neutral? Because they have the same number of protons as neutrons 15 of 20 Number of protons =... Number of neutrons 16 of 20 What does the nuclear symbol of an atom tell you? Its atomic (proton) number and mass number 17 of 20 Atomic number = ... How many protons there are 18 of 20 Mass number = ... The TOTAL number of protons and neutrons in the atom 19 of 20 How do you work out the number of neutrons? Subtract the atomic (proton) number from the mass number 20 of 20
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