Any science fair questions for 8th graders? list at least 4

How does water purity affect surface tension?

When is the best time to plant soy beans?

Which material is the best insulator?

How does arch curvature affect load carrying strength?

How do different foundations stand up to earthquakes?

What sugars do yeast use?

answer: option (b) is the correct answer.

explanation:

a covalent bond is formed by sharing of electrons. whereas polarity arises due to difference in electronegativity of two atoms.

therefore, more is the electronegativity of an atom which combines with the titanium, more readily it will induce a partial positive and negative charge.

thus, out of the given options fluorine is most electronegative and has an incomplete octet. therefore, it will readily combine with titanium to share the electrons and complete its octet.  

answer; capital earns interest; entrepreneurship receives a profit or incurs a loss;