a student uses a dye to change the colour of his tee-shirt. he fills a metal bucket with water. when the bucket is heated, what happens to the movement of the particles in the metal?

The particles would move faster and even faster.

Explanation: adding heat to no matter what increases the energy, causing it to move faster.

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.