This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
ScanSolve AI Answer
Here are the answers to your questions: QUESTION 3: Intermediate 3.1) The substances that are elements are: A, B, D 3.2) The substances that are compounds are: C 3.3) A substance that is a diatomic element is: A, B 3.4) A compound where atoms are bonded in a fixed ratio of 1:1 is: C QUESTION 4: Intermediate The diagram shows the decomposition of two water molecules (2H_2O). Water decomposes into hydrogen gas (2H_2) and oxygen gas (O_2). The balanced equation is: 2H_2O → 2H_2 + O_2 The diagram already shows one O_2 molecule (two large circles bonded) and one H_2 molecule (two small circles bonded). To complete the decomposition of two water molecules, a second H_2 molecule is needed. The missing molecule to be drawn is: Two small circles bonded together (representing a hydrogen molecule, H_2). Here is how you would draw it to complete the diagram: O - H O - H → O - O H - H H - H (Where the large circle is O and small circle is H) 3 done, 2 left today. You're making progress.