Is raven a proper noun

What two ways is energy involved in a chemical reaction? What happens when you decrease the temperature of a material? What is the scale factor if 5 centimeters equals 2 km? Is there any difference between extraction of metals and electrolysis? What is the pH of Epsom salt when mixed with water? 14 stone and 200 pounds equals how many kg? Is 700 watts more powerful than 14 volts? What does a quarter weigh in grams? What is the best explanation for the continual changes in the classification system of organisms? What was the damage on the ngauruhoe eruption? Explanation of folding and faulting of diastrophism? What is the role of tidal action along the coast? Which surface of the leaf upper or lower contains the most chlorophyll Explain why? How can a point mutation cause protein systhesis to stop prematurely? What in inches does match up to 55.50 cm? Is there lunar eclipse in uae today? What stores materials waste and water and also mantains hydrostatic pressure? Does reducing the size of food particles aid the process of digestion? What is the name of CH2C12? What is microbial enzyme?