Core Chemistry 0.0 / 5 ? ChemistryAtoms and compoundsAtomsGCSEAQA Created by: ruby millardCreated on: 30-03-15 15:10 How are compounds formed? Compounds are formed when two or more elements combine together. 1 of 7 What is the periodic table? The periodic table is a list of the elements. 2 of 7 What is an atom? An atom is a compound of three sub - atomic particles (smaller than an atom) protons, neutrons, and electrons. 3 of 7 The atomic number of an element is what? The atomic number is the amount of protons in the nucleus also equal to the number of electrons. 4 of 7 What is the charge for protons, neutrons and electrons? Protons have a positive charge, electrons have a negative charge and neutrons are not charged. 5 of 7 What is the atomic mass number? The atomic mass number is the sum of the protons and neutrons in the nucleus of an atom. 6 of 7 All the elements in the same group in the periodic table have the same what? They all have the same number of electrons in their highest energy level (outer shell). 7 of 7
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