SouravSeptember 2, 2024

Water, carbon, and hydrogen peroxide. A pure substance that cannot be broken down.

SouravSeptember 2, 2024

Answer

Element: Elements are pure substances that consist of only one type of atom and cannot be broken down into simpler substances by chemical means.

Did this page help you?

1st

Sourav

Score: 90%

Questions: 20

2nd

Priyanka

Score: 90%

Questions: 10

3rd

Vesnce

Score: 45%

Questions: 20

4th

Hector

Score: 40%

Questions: 10

Click "Create Mock Test" to start a quiz.
Select categories and the number of questions, then click "Submit" to begin.
After completing the quiz, enter your name and email, then click "Submit" to view your score.
Your score is shown as a percentage (e.g., 5 correct out of 10 is 50%).
The leaderboard displays your name, score percentage, and total questions answered.