1) What is the role of salt in a saline solution or a solution of saltwater? a) Solution b) Solute c) Solvent d) Mixture 2) What do we have after combining two chemical elements? a) Combination b) Composition c) Mixture d) Compound 3) Which scientist is credited with the invention of the periodic table? a) Mendeleev b) Rutherford c) Newton d) Darwin 4) Which gas accounts for the largest part of the air? a) Carbon b) Hydrogen c) Nitrogen d) Oxygen 5) What is the chemical name of the compound NaCl? a) Sodium chloride b) Potassium chloride c) Hydrogen peroxide d) Iodine

순위표

비주얼 스타일

옵션

템플릿 전환하기

자동 저장된 게임을 복구할까요?