Let's Try

Directions: Choose the letter of the correct answer. Write your answer on a
separate answer sheet.

1. Which of the following statements correctly describes an element?
a. Element is made up of one substance alone.

b. Element is a pure substance consisting of one type of atom.
c. Element is a pure substance made of two different molecules.

d. Element is a pure substance that can be broken

substances.

down into simpler2. What type of a pure substance is Barium chloride (BaCl)?
a. Mixtures b. Element

c. Compound

d. Symbol

3. What are the elements present in glucose with a chemical formula
a. Copper, Hydrogen, Oxygen
b. Cerium, Helium, Oxygen
c. Calcium, Hassium, Osmium
d. Carbon, Hydrogen, Oxygen

C&H:20,?

4. When Magnesium hydroxide Mg(OH); decomposes, the resulting products
are Magnesium oxide (MgO) and water (H₂O). Magnesium hydroxide is an

example of what kind of pure substance?

c. Compound d. Symbol
a. Person who discovered it. c. Place it was discovered.
b. Latin or Greek roots
d. Mythological concepts or Character

a. Mixtures b. Element

5. Which of the following is the basis of element Thorium's name?

6. Which of the following elements was named after a person who discovered.

it?
a. Tungsten b. Radium

c. Francium

d. Curium

7. How many elements are there in a periodic table?
a. 116
b. 115
c. 118
d. 117

8. Who among the following scientists formulated the periodic table of

elements?

a. Dmitri Mendeleev
b. Hennig Brand

c. Robert Boyle

d. Antoine Becquerel

9. My mother is fond of collecting jewelries from all around the world.

Which of the following elements does jewelry made of?
b. Aluminum
c. Gold
AL
10. In order to keep our foods from spoiling my mom always use a compound

a. Copper

to preserve our food. Which of the following does she use?

a. Bleach
b. Vinegar​