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Chemistry Unit Review Vocabulary to know: atom compound electron cloud evaporation ion matter mixture nucleus plasma solid sublimation atomic number condensation electrons exothermic ionic bonding melting molecule orbits protons solute suspension chemistry covalent bonding element families isotopes metalloids neutrons periods saturated solution gas chemical property density endothermic freezing liquid metals nonmetals physical properties shells solvent Concepts to know: Know how to find the atomic mass, atomic number, element name and the element symbol of an element when looking at a Periodic Table of Elements. Know how to find the number of protons, electrons, atomic mass and the number of neutrons for an element. Know how to place electrons in their correct orbit. Know the names of these orbits. Know how to identify what elements and how many of each there are when given a formula. Know the difference between metals, nonmetals and metalloids. Know the difference between the different states of matter. Know the difference between ionic and covalent bonding. Know the first 20 elements, their symbols and their atomic number. Know the basics of the periodic table. What to study for the test? The two biggest things to study are the notes and the readings. Pay special attention to the chapter reviews, they are a review of the readings. Also look over any labs and activities that we have done. I try to pull questions from them as well. Use the quizzes as a study guide. Ask questions if you do not understand a concept.