1.) Potassium and nickel are in the same row of the periodic table. What do these elements have in common?
D. - They have the same number of electron shells
2. C - They all have the same number of electrons in the outer shell
3. B- Baking cake
4. C - the H2O and O2 produced have the same mass as the original H2O2
5. D - A new substance is formed as the battery is used
6. C - 20
7. B - It has the same number of atoms on both sides for each specific type of atom
8. B - Eight
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These are 100% correct, idk if they’ll change in the future so sorry if they did and gave you a bad grade :(
CORRECT ANSWERS 2023 💯