Examlex
When we carry out a chi-square test of independence, the expected frequencies are based on the null hypothesis.
Polar Covalent Bond
A type of chemical bond where a pair of electrons is unequally shared between two atoms, resulting in a distribution of charge.
Molecules
Collections of atoms linked in a way that forms the smallest essential part of a chemical compound capable of participating in a chemical reaction.
Carbon-Hydrogen Bond
A chemical bond between carbon and hydrogen atoms, foundational to organic molecules.
Ethane
A simple alkane with two carbon atoms, used as a precursor in the production of ethylene for plastics and other chemical products.
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