1. Which of the following is the simplest form of substance? A. Chemical Formula B. Compound C. Element D. Mixture 2. Which of the following is NOT an example of compound? A. Ammonia B. Helium gas C. Hydrogen peroxide D. Table sugar 3. Which of the following statements is TRUE about elements and compounds? A. Are homogenous in nature, B. Are simplest form of matter. C. Are commonly naturally occurring materials. D. Can be broken down into simpler substances.​