What are some examples of endothermic reactions?

Measuring which physical property is most likely to produce the most precise results when trying to identify a substance

In saturated organic compounds, all the bonds between carbon atoms are called?

Which statement explains why the bonds between non metals tend to be covalent? the bonds are found to be nondirectional they have large differences in electronegativity they have small differences in electronegativity they have ions that produce an electrostatic pull