I need a patient and knowledgeable chemistry tutor to help my teenage child improve their understanding of key concepts in high school chemistry. We are focusing on topics like atomic structure, chemical reactions, and stoichiometry. Ideally, the tutor will be able to explain things clearly and provide practice problems. Sessions will be held at our home in Dublin. Flexible scheduling is appreciated, but we prefer weekday afternoons. Previous tutoring experience and good references would be a plus.