Put all calculations on the examination pages. Choose the one best or correct answer for each question and write it both on your exam paper and on the computer answer sheet. This exam consists of pages. Ag 2 SO 4 is sometimes insoluble. Questions 1-20 are statements.
Ice is less dense than water.
The symbol for the element aluminum is Al. Ca is the symbol for carbon. A gas escapes from an open container because it has no weight. The Kelvin is a unit of volume. Sodium chloride dissolves in water to form a solution which conducts electricity.