I just need these questions answered, you can take your time. I’ll give you 20 points and brainliest if correct! 1. Water (Hydrogen and Oxygen)
A. Element
B. Compound

2. Coal (Carbon)
A. Element
B. Compound

3. Carbon Dioxide (Carbon and Oxygen)
A. Element
B. Compound

4. Oxygen
A. Element
B. Compound

5. Chalk (Calcium, Carbon and Oxygen)
A. Element
B. Compound

6. Wax (Carbon and Hydrogen)
A. Element
B. Compound

7. Table Salt (Sodium and Chloride)
A. Element
B. Compound

8. Caffeine (Carbon, Hydrogen, Nitrogen, and Oxygen)
A. Element
B. Compound

you must remain stopped until the stop signal is retracted and the red lights are turned off. approaching traffic in the opposite roadway of a divided highway shall not be required to stop, even if the school bus has the stop-arm extended and the alternately flashing warning signal lamps on.

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.