4. Which of the following substance is an element?
a. carbon dioxide
b. iron
c. salt
d. sugar
5. Which of the following describes an element?
a. The simplest substance.
b. It can be broken down into other types of substances.
c. It can be separated through a chemical process.
d. It is composed of two or more types of atoms.
6. Which of the following statements correctly describes a compound?
a. It is composed of two atoms that bond together.
b. It is composed of two atoms of two or more that bond together.
c. It can be broken down into a simpler type of matter by chemical means.
d. It has a unique property that is different from the properties of its
individual elements.
7. What is the result if Hydrogen gas and Oxygen gas combine?
a. alcohol
b. salt
c. sugar
d. sater
8. Salt is made up of what elements?
a. Sodium and Chloride
b. Sodium and Chlorine
c. Sodium and Copper
d. Sodium and Oxide
9. Which of the following is correctly matched?
a. gold: element: silver: compound
b. oxygen: element: water: compound
c. sugar: element: salt: compound
d. water: element: hydrogen: compound
10.Which of the following is NOT an element?
a. Na
b. Fe
c. Pz
d. He