Apply scientific reasoning solid
substance a has a melting point of 100°c.
liquid substance b has a freezing point of
110°c. for each substance, identify its state
of matter, and describe the motion of its
particles, when the substance is at 115°c.

The answer is below both substances are liquids.

Explanation:

Substance A

This substance has a melting point of 100°C, this menas that at 115°C, is a liquid. In this state of matter, particles can move, they are not fixed, and can take the shape of a container.

Substance B.

This substance has a freezing point of 110°C, at 115°C, is also a liquid, then the particles can move because they are not fixed, and can take the shape of its containe.

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms

it is a good conductor

explanation: