3. Which of the following statements is true about elements? They are A. homogenous in nature. B. grouped in each state. C. commonly grouped according to their set of properties. D. commonly grouped according to their set of characteristics. 4. Which of the following statements is true about compounds? They are A. homogenous in nature. B. heterogeneous in nature. C. joined using chemical process. D. commonly grouped according with their set of properties. 5. Which of the following is a property of an element? A. It is the simplest substance. B. It is composed of two or more types of atoms. C. It can be separated through a chemical process. D. It is composed of two or more types of substances. 6. Which of the following is a property of a compound? A. It is the simplest substance. B. It is composed of two or more types of atoms. C. It can be separated through a physical process. D. It is composed of two or more types of substances. 7. Which of the following is an example of an element? A. Iron B. Hydrogen peroxide C. Salt D. Water​