what is the total number of electrons shared in a double covalent bond between two atoms, and why?

four. One covalent bond is two electrons, a double convalent is twice that.

why wouldnt it be 8?

Because 2*2=4.
Reread Bob Pursley's answer. Two electrons is a single bond; therefore, a double bond is twice that or four electrons.

i know, but on my test i have to say why i got it wrong and i put 8, so can i just say its not 8 electrons because it would only be 4?

i know, but on my test i have to write corrections why i got the problem wrong and i put 8, so can i just say its not 8 electrons because it would only be 4?

I have no idea why you got it wrong (except your answer was wrong); that is, I don't know why you picked 8. If you know why you answered 8 then that is what you put down for why you got it wrong. I hope this helps. If not I'll try again.

the thing is i do study, but during tests i freeze up idk why but i jus get rly nervous. :( are there any ways of studying that you find effective that i can posibly try?

I suppose everyone has a favorite. I do the following for a test.
Summarize my notes and equations. Write them down. Then write and rewrite them until I have them memorized. For some tests that works very well. With math tests, it is important that you practice enough before the test that you UNDERSTAND how to work the problems. (You can't memorize all the math problems). That way you can work ANY problem thrown your way and not just the ones you have worked so many times you have them memorized. I hope this helps a little and good luck.

I understand that test anxiety can be challenging. Here are some additional strategies that you can try to help overcome your nerves and improve your studying:

1. Start Early: Begin studying well in advance of the test to give yourself enough time to thoroughly review the material. Breaking the material into smaller, manageable chunks and studying a little bit each day can help prevent cramming and reduce anxiety.

2. Practice Active Learning: Instead of simply reading or highlighting your notes, engage with the material actively. Try explaining concepts to someone else, create flashcards or concept maps, or solve practice problems on your own. This will help reinforce your understanding and improve retention.

3. Seek Help: If you are struggling with certain concepts or topics, don't hesitate to seek help from your teacher, classmates, or tutors. They can provide explanations or clarify any misunderstandings, which can boost your confidence and improve your performance.

4. Create a Study Schedule: Plan out your study sessions and allocate specific time slots for each topic or subject. Having a structured study schedule can help you stay organized and focused. Remember to include regular breaks to rest and recharge your mind.

5. Use Various Study Techniques: Experiment with different study techniques to find what works best for you. This can include summarizing information in your own words, teaching the material to someone else, practicing with past exams or sample questions, or using mnemonic devices to remember key points.

6. Practice Relaxation Techniques: Prior to and during the test, practice relaxation techniques such as deep breathing, meditation, or visualization. These techniques can help calm your mind and reduce anxiety.

7. Take Care of Yourself: Make sure to get enough sleep, eat well-balanced meals, and engage in physical activity. Taking care of your physical and mental well-being is crucial for optimal cognitive function and reducing stress.

Remember, everyone's study habits and learning styles are different, so it's important to find what strategies work best for you. Don't be too hard on yourself and keep practicing and exploring different approaches until you find what helps you succeed. Good luck!