1) What is the lightest element? a) Oxygen b) Hydrogen c) Carbon d) Nitrogen 2) Which element is a noble gas? a) Helium b) Oxygen c) Nitrogen d) Carbon 3) What is the symbol for Sodium? a) Si b) S c) N d) Na 4) What is the atomic number of Carbon? a) 8 b) 6 c) 12 d) 14 5) Which element is liquid at room temperature? a) Iron b) Mercury c) Copper d) Aluminum 6) Which element has atomic number 8? a) Carbon b) Nitrogen c) Oxygen d) Helium 7) What is the symbol for Lead? a) Pb b) Le c) Ld d) Pd 8) What is the symbol for Silver? a) Ag b) Si c) Au d) Al 9) What is the symbol for Tin? a) Te b) Ti c) Tn d) Sn 10) What is the symbol for Calcium? a) C b) Cl c) Ca d) Ce 11) Which element has atomic number 2? a) Helium b) Hydrogen c) Lithium d) Beryllium 12) Which element is known as quicksilver? a) Mercury b) Lead c) Tin d) Silver 13) What is the symbol for Phosphorus? a) Po b) Ph c) P d) Pt 14) Which element has atomic number 79? a) Copper b) Silver c) Platinum d) Gold 15) What is brass made of? a) Iron, Carbon b) Copper, Tin c) Copper, Zinc d) Nickel, Zinc 16) What is bronze primarily composed of? a) Nickel, Zinc b) Copper, Zinc c) Iron, Carbon d) Copper, Tin 17) What is stainless steel made of? a) Copper, Tin b) Iron, Carbon c) Copper, Zinc d) Iron, Chromium 18) What is pewter primarily made of? a) Tin, Lead b) Copper, Tin c) Iron, Carbon d) Nickel, Zinc 19) Which alloy is used in musical instruments? a) Steel b) Brass c) Bronze d) Duralumin 20) What is the chemical formula for table salt? a) CaCl2 b) KCl c) NaCl d) MgCl2 21) What is the formula for carbon dioxide? a) CO2 b) CO c) C2O d) O2 22) What is the formula for methane? a) C3H8 b) C2H6 c) CH4 d) C4H10 23) What is the formula for calcium carbonate (chalk)? a) CaSO4 b) CaCl2 c) CaO d) CaCO3 24) How many elements are there on the Periodic Table? a) 100 b) 118 c) 200 d) 134

Science 2

由
打印
嵌入

排行榜

视觉风格

选项

切换模板

恢复自动保存：？