Admin Table of Contents
What is the measure of how heavy and tightly packed the molecules are in an object?
density: How closely packed together the molecules of an object or substance are.
What is tightly packed molecules?
A solid can hold it’s shape because they have particles (ions, atoms or molecules) that are closely packed together. In a solid, particles are packed tightly together so they are unable to move about very much. Solids have a definite shape. They do not conform to the shape of the container in which they are placed.
What molecules are tightly packed together?
Solids, liquids and gases are three states of matter. In solids, the particles are tightly packed together. In liquids, the particles have more movement, while in gases, they are spread out. Particles in chemistry can be atoms, ions or molecules.
Which of the following is a measure of how tightly the atoms of the material are packed together?
Density: A measure of how tightly packed the matter is in an object and the weight of the atoms in the object. Density = mass/volume.
Are gas molecules tightly packed?
gas are well separated with no regular arrangement. liquid are close together with no regular arrangement. solid are tightly packed, usually in a regular pattern.
Why molecules of solids are tightly packed?
Solids have a definite shape and occupy a definite space i.e. solids have a fixed volume. Reason- Since molecules are closely packed in a solid, they have the least intermolecular space and strong intermolecular force of attraction. They cannot move from their place, giving solids a definite shape and volume.
What is how tightly atoms are packed together?
Solids represent the state of matter in which atoms are very tightly bound to each other. Gases have the loosest packing of atoms, as compared to solids and liquids and that is why gases have no specific physical shape or structure.
What is the basic unit for density?
kilograms per cubic metre
Density is commonly expressed in units of grams per cubic centimetre. For example, the density of water is 1 gram per cubic centimetre, and Earth’s density is 5.51 grams per cubic centimetre. Density can also be expressed as kilograms per cubic metre (in metre-kilogram-second or SI units).