Predicting a physical state - Earth's atmosphere - GCSE Chemistry (Single Science) Revision - OCR 21st Century - BBC Bitesize
Predicting a physical stateThe state of a substance at a given temperature can be predicted if its melting point and boiling point are known.QuestionThe melting point of oxygen is -218°C and its boiling point is -183°C. Predict the state of oxygen at -200°C.Explaining melting points and boiling pointsMeltingParticles in a substance have forces of attraction between them. When a substance in the solid state is heated:energy is transferred to the particles the particles move faster and have more some... Читать дальше...