/20 1154 Chimie Générale Preparation (Dr. Chhour Monivan, PhD) 1 / 20 1) In the Periodic Table, elements are assigned with atomic number based on? a. Number of electrons b. Number of neutrons c. Number of protons 2 / 20 2) Which chemical element belong to halogen group? a. chlorine b. lithium c. magnesium d. calcium 3 / 20 3) Which chemical element belong to alkali metal group? a. carbon b. sodium c. gold d. cobalt 4 / 20 4) Empirical formula of hydrogen peroxide? a. H2O b. H2O2 c. HO d. HO2 5 / 20 5) Which chemical element belong to halogen group? a. oxygen b. iodine c. potassium d. carbon 6 / 20 6) Which chemical element belong to alkali metal group? a. magnesium b. lithium c. Chlorine d. iron 7 / 20 7) Which subatomic particle has positive charge? a. anion b. neutron c. proton d. electron 8 / 20 8) Which subatomic particle has no charge? a. electron b. neutron c. proton d. anion 9 / 20 9) Which subatomic particle has negative charge? a. neutron b. electron c. proton d. cation 10 / 20 10) Which chemical element belong to alkali earth metal group? a. nitrogen b. magnesium c. sodium d. carbon 11 / 20 11) Which chemical element belong to halogen group? a. bromine b. carbon c. oxygen d. nitrogen 12 / 20 12) Which chemical element belong to alkali metal group? a. magnesium b. calcium c. fluorine d. potassium 13 / 20 13) Which chemical element belong to halogen group? a. gold b. fluorine c. cobalt d. iron 14 / 20 14) Which chemical element belong to alkali earth metal group? a. potassium b. calcium c. carbon d. oxygen 15 / 20 15) Molecular formula of phosphoric acid? a. H₂ SO₄ b. H3PO4 c. HCl d. HNO3 16 / 20 16) Molecular formula of nitric acid? a. HCl b. H3PO4 c. HNO3 d. H₂ SO₄ 17 / 20 17) Molecular formula of sulfuric acid? a. HCl b. H3PO4 c. H₂ SO₄ d. HNO3 18 / 20 18) Empirical formula of hydrazine? a. N2H2 b. NH2 c. N2H4 d. NH3 19 / 20 19) Glucose (C6H12O6), ribose (C5H10O5), Acetic acid (C2H4O2), and formaldehyde (CH2O) all have different molecular formulas but the same empirical formula. Write their empirical formula.? a. C6H12O6 b. C5H10O5 c. CH2O d. C2H4O2 20 / 20 20) What are isotopes? a. Elements that have the same number of neutrons b. Elements that have the same number of electrons c. Elements that have the same number of protons Your score isThe average score is 85% Facebook 0% Restart quiz Any comments? Send feedback