help guys pls is urgent!

1. What is the first element on the periodic table?

2. What is the centre of an atom called?

3. True or false? Acids have a pH level below 7.

4. What is the main gas found in the air we breathe?

5. True or false? An electron carries a positive charge.

6. Famous New Zealand scientist Ernest Rutherford was awarded a Nobel Prize in which field?