Answer

1. Which of the following CANNOT be broken down into simple substance?

★A. Chemical Formula

B. Compound

C. Element

D. Mixture

2. Which of the following is NOT an example of element?

A. Helium gas

B. Hydrogen

★C. Ice

D. Iron

3. Which of the following statements is true about elements and compounds?

★A. Homogenous in nature

B. Simplest form of matter.

C. Commonly and naturally occurring materials.

D. Can be broken down into simpler substances.

4. Which of the following substance is NOT a compound?

★A. Air

B. Hydrogen

C. Salt

D. Sugar​