Table of Contents
What is the Mole Concept?
Mole Concept – Definition & Examples:
The mole concept is a method of counting particles. It is based on the number of atoms in 12 grams of carbon-12. This number is called a mole. A mole is equal to 6.022 x 1023 particles.
What is a Mole?
A mole is a unit of measurement that is used to measure the amount of a substance in a sample. One mole of a substance is equal to the molecular weight of that substance.
What is Molar Mass?
The molar mass of a substance is the mass of one mole of that substance. A mole is a unit of measurement that is equal to 6.02214 x 10^23, so the molar mass of a substance is the mass of that substance divided by 6.02214 x 10^23.
Gram Atomic Mass and Gram Molecular Mass
The gram atomic mass (A) is the mass of an atom of a given element in grams. The gram molecular mass (M) is the mass of a molecule of a given substance in grams.
To Find the Gram Molecular Mass of an Element
- To find the gram molecular mass of an element, divide the atomic weight of the element by the molecular weight of the element.
- The gram molecular mass of an element is the mass of one mole of atoms of that element. To find the gram molecular mass of an element, you need to know the atomic mass of the element and the atomic number of the element. The atomic mass of an element is the mass of one atom of that element. The atomic number of an element is the number of protons in an atom of that element.
- To find the gram molecular mass of an element, you need to use the formula:
- gram molecular mass = atomic mass x atomic number
- For example, the atomic mass of carbon is 12.011 u and the atomic number of carbon is 6. So the gram molecular mass of carbon is 12.011 u x 6 = 72.066 u.
Gram Molecular Volume
The gram molecular volume is the volume of a gram of a substance.
Fun and Interesting Facts about Molecules
- A molecule is the smallest particle of an element that has the chemical properties of that element.
- Molecules are made up of atoms.
- A molecule can be made up of one atom or more than one atom.
- A molecule can be a single atom or a group of atoms.
- The smallest molecule is a single atom.
- The largest molecule is a group of atoms.
- A molecule is held together by chemical bonds.
- The type of chemical bond that holds a molecule together is determined by the type of atoms that make up the molecule.
- The physical and chemical properties of a molecule are determined by the type of atoms that make up the molecule and the type of chemical bonds that hold the atoms together.
- A molecule is in a constant state of motion.
- The movement of atoms and molecules is called Brownian motion.
- The temperature of a molecule is determined by the average speed of the atoms in the molecule.
- The higher the temperature, the faster the atoms in a molecule move.
- The size of a molecule is determined by the distance between the atoms in the molecule.
- The distance between the atoms in a molecule is called the bond length.
- The bond length is usually about 1 nanometer.
- The shape of a molecule is determined by the type of atoms that make up the molecule and the type of chemical bonds that hold the atoms together.
