chem unit 1 0.0 / 5 ? ChemistryAtoms and compoundsGCSEAQA Created by: elliejbradleyCreated on: 28-12-13 22:48 Atoms in an element are...? all the same type 1 of 5 An atom consists of...? a nucleus containing positive protons and neutral neutrons and negative electrons arranged in energy levels 2 of 5 What is the correct chemical symbol for sodium? Na 3 of 5 What are the groups in the periodic table? collection of elements with the same number of electrons in their highest energy level 4 of 5 what is the difference between the atomic number and the atomic mass number atomic number: the number of proton 5 of 5
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