Elements and Nucleosynthesis in the Universe

Carl Sagan said, "We are made of star stuff." Which element is the lightest, the most abundant in the universe, and is also found in humans?

Heavier elements are created in different types of stars as they die or explode. What is the process that is produced inside the stars that transforms hydrogen into helium, heat, and radiation?

Scientists believe that the Big Bang theory has some stages in the formation of the universe which began through the eruption/blasting of the universe. What sequence of events best describes the widely accepted stages in the formation of the universe?

Protons and neutrons combined in the center of the star and formed the lightest to heavier elements, which was eventually followed by the different elements in the periodic table and the formation of molecules/compounds. How does this molecule/compound form?

It is a device that is used to speed up the protons to overcome the repulsion between the protons and the target atomic nuclei by using magnetic and electrical fields.

In a chemical reaction which among the choices is the term used when two or more nuclei combine to form heavier nuclei?

Using electron configuration, what is the highest energy level and the number of electrons of sulfur?

In an experiment, it was observed that oil was immiscible with water, same behavior when it was combined with vinegar but when water was added to vinegar, they were miscible. What does this mean?

What covalent bond is present if the electronegativity difference between atoms is equal/balance?

Polar bonds form when two atoms equally share electrons on all sides of a molecule.

The following phrase generalizes that substances could easily be dissolved by polar solvents. polar solvents dissolve the polar solute. nonpolar and polar covalent compounds dissolve polar solvents. polar solutes and covalent compounds dissolve polar solvents. non- polar solutes dissolve polar solutes.