4) Which substance in each set has the highest melting point? Justify your answer
using chemical principles.
a. KCl or SiO2
b. NH3 or C diamond

Covalent bonds generally form when the bonded elements have a difference in electronegativity less than 1.5. subtract the electronegativities for the following pairs of elements and predict whether they form a covalent bond. electronegativity difference of c and c: ionic covalent electronegativity difference of mg and cl: ionic covalent

The bone of a dinosaur and the imprint of a leaf are examples of which kind of fossils? a) index b) body c) amber d) trace

Show how to convert the temperature 84.7° c to kelvin. include all steps and label the final answer