Question

As aluminum gets hot, the solid metal expands before melting. What best explains this phenomenon? A. The atoms collide with greater force, fusing their nuclei together. B. The atoms eject electrons, becoming positive ions that repel each other. C. The atoms chemically react with each other, releasing heat that melts the solid metal. D. The atoms move faster, increasing the distance between them before breaking some of their bonds.

Answer 1

D. The atoms move faster, increasing the distance between them before breaking some of their bonds.

Step-by-step explanation:

a liquid is the the state of matter where the atoms can move freely so to get there it has to expand and then liquify.

Answer 2

Answer: Option D

Step-by-step explanation:

The metals when heated on a very high temperature provides kinetic energy to the electrons.

By gaining energy the electrons starts moving very fastly because of more kinetic energy and they starts colloiding with each other at very long distance.

Before the bonds between them is broken down the distance between the electrons increases so it expands before melting.

Hence, the correct answer is option D