Carbon dioxide is a gas at room temperature, diamonds are solid, and I see no room... What is in order from least to greatest in density. Solid liquid gas. Gas is always more dense than any solid or liquid.
Fourth grade is the equivalent of 'Year 5' (ages 9â10) in England and Wales, Primary 6 in Northern Ireland and Primary 6 in Scotland - the sixth year of compulsory education in England, Wales, Scotland and Northern Ireland.
Report Abuse. The average age for seniors in highschool is 18. work it down from there. For college it is freshman 18 or 19 and 22 or 23 for college (university) senior in a four year college.est Answer: Well, usually in Elementary School, we have 5 grades: 1st grade, 2nd grade, 3rd grade, 4th grade, and 5th grade. Junior High, or as most people call it Middle School, is: 6th grade, 7th grade, 8th grade. High school is: 9th grade(freshman), 10th grade(sophomore), 11th grade(junior), 12th grade(senior).