Additional Activities Directions: Read each sentence carefully. Write TRUE if the statement is true, write FALSE if the statement is false. Write your answer on your TLE Notebook. 1. The potential hazards of a chemical or a substitute candidate must be assessed by noting the toxicity of the chemical to both humans and environment. 2. Regardless of its type, substitution should really make a positive difference for health and safety. 3. Substitution can be on different levels such as using the most hazardous chemicals in the same process. 4.Substituting hazardous chemicals follows the principles of green chemistry and results in clean technology. 5. Setting substitution criteria is NOT one of the steps on substituting chemical solutions. 6. Mensuration is the branch of geometry that deals with the measurement of length, area, or volume. 7. Mass is the measure of the force of gravity on the object. 8. Astronomers use unit of distance called a parsec (pc), which is equal to 3.26 light-years. 9. Degrees Fahrenheit is developed by G. Danielo Fahrenheit. 10. The act or process of or result of calculating is called calculation.