Please paanswer nga po '"":

1.) Cannot be separated

2.) Separates to 2 Hydrogen atoms and an Oxygen atom by Electrolysis

3.) Cannot be separated

4.) Separates to a Carbon atom and 2 Oxygen atoms by Electrolysis

5.) Cannot be separated

Explanation:

2, 3 and 5 cannot be separated into other types of matter because they are ELEMENTS, therefore, pure substances.

close reading is a skill that requires students to determine purpose and notice features and language used by the author so that they can think thoughtfully and methodically about the details in the text and why they were used.

hope this works!