2. What type of a pure substance is Barium chloride (BaCl2)?
a. Mixtures b. Element
c. Compound
3. What are the elements present in glucose with a chemical formu
a. Copper, Hydrogen, Oxygen c. Calcium, Hassium
b. Cerium, Helium, Oxygen
@Carbon, Hydrogen
4. When Magnesium hydroxide Mg(OH)2 decomposes, the resul
are Magnesium oxide (MgO) and water (H2O). Magnesium hy
example of what kind of pure substance?
a. Mixtures b. Element
c. Compound