1. What are various system in which units are expressed? 2. What is density of a substance? How is it measured? 3. Define : Volume 4. State the law of multiple proportions. 6
Answers
Answer:
Explanation:
The density of material shows the denseness of that material in a specific given area. A material’s density is defined as its mass per unit volume. Density is essentially a measurement of how tightly matter is packed together. It is a unique physical property for a particular object. The principle of density was discovered by the Greek scientist Archimedes. It is easy to calculate density if you know the formula and understand the related units The symbol ρ represents density or it can also be represented by the letter D.
Density Definition: Density is the measurement of how tightly a material is packed together. It is defined as the mass per unit volume.
Density Symbol: D or ρ
Density Formula: ρ = m/V, where ρ is the density, m is the mass of the object and V is the volume of the object.
1.The current international standard for the metric system is the International System of Units (Système international d'unités or SI). It is a system in which all units can be expressed in terms of seven units. The units that serves as the SI base units are the metre, kilogram, second, ampere, kelvin, mole, and candela.
2.The formula for density is d = M/V, where d is density, M is mass, and V is volume. 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.
3.the amount of space that a substance or object occupies, or that is enclosed within a container.
4.law of multiple proportions, statement that when two elements combine with each other to form more than one compound, the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.