Question

a solid has three dimensions (height, length and depth), and its volume is measured with a formula of length times width times depth. in a solid, the atoms and molecules are close together, creating a strong force between them. these particles vibrate in place but do not flow or move around, so the object maintains its shape and volume.
a liquid is a substance that has a definite volume, but no definite shape. it takes on the shape of its container or simply spreads out upon a surface (think of a spilled glass of milk). the volume of a liquid is usually measured in liters or milliliters. in a liquid state, substances can change their shape because their atoms or molecules have more energy than they do in a solid state. this means that these particles are moving fast enough to overcome some of the force of attraction between them, thus allowing the liquid to flow.
which of these is a difference between a solid and a liquid?
choose one option
a solids are made of atoms, but liquids are not.
b a solid has volume but not shape, while a liquid has shape but not volume.
c the particles in a solid vibrate in place, while a liquid’s particles can flow.
d solids are measured in three dimensions, but liquids are only measured in two.

Explanation:

• Opción A: Ambos sólidos y líquidos están formados por átomos, por lo que esta opción es incorrecta.
• Opción B: Un sólido tiene forma y volumen definidos, mientras que un líquido tiene volumen definido pero no forma definida. Esta opción tiene la descripción invertida y es incorrecta.
• Opción C: Según el texto, en un sólido, las partículas vibran en su lugar, y en un líquido, las partículas tienen suficiente energía para superar parte de la fuerza de atracción y pueden fluir. Esta opción coincide con la información del texto.
• Opción D: Tanto sólidos como líquidos son medidos en tres dimensiones (el volumen del líquido también involucra longitud, anchura y profundidad, aunque se mida en litros/mililitros, que son unidades de volumen tridimensional). Por lo tanto, esta opción es incorrecta.

Answer:

C. The particles in a solid vibrate in place, while a liquid’s particles can flow.