Structure Of Atoms
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STRUCTURE OF ATOMS
ATOM The word atom is derived from the Greek word atom which means Indivisible. The Greeks concluded that matter could be broken down into particles to small to be seen. These particles were called Atoms.
Structure of Atoms Atoms are made of three basic parts:2. Protons 3. Neutrons 4. Electrons Protons and neutrons are responsible for most of the atomic mass in a 150 person 149 lbs, 15 oz are protons and neutrons while only 1 oz.is electrons.The mass of an electron is very small.
HOW DOES AN ATOM LOOK?
Electrons Electrons are tiny,negatively charged particles that form a cloud around the nucleus of an abom. Each electron corries a single fundamental unit of negative electric charge,or -1.
Protons Protons carry a positive charge of+1,exactly the opposite electric charge as electrons.The number of probons in the nucleus debermines the botal quantity of positive charge in the atom.In an electrically neutral atom,the number of the protons and the number of electrons are equal,so that the positive and negative charges balance out to zero.The proton is very small,but it is fairly massive compared bo the other particles that make up matter.A proton`s mass is about 1,840 times the mass of an electrons.
NEUTRONS Neutrons are about the same size as protons but their mass is slightly greater without neotrons present, the repulsion among the positively charged probons would cause the nucleus to fly apart.
Electrons and its protons holds the atom together.Normally, an atom is electrically neutral,which means that the negative charge of its electrons is exactly equalled by the positive charge of its protons
PROPERTIES OF ATOMS Atoms have several properties that help distinguish one type of atom from another. • Atomic Number • Mass Number • Atomic Mass and Weight • Isotopes
• Atomic Number- Each element has a unique number of protons in its atoms.This number is called the Atomic Number. • Mass Number- The total number of Protons and Neutrons in the nucleus of an atom is the Mass Number of the Atom. • Atomic Mass and Weight- AMU is 1/12 the mass of an atom of carbon . • Isotopes-atoms of the same element that differ in mass number are called Isotopes.
PRESENTED BY:AMANDEEP KAUR SANDEEP KAUR GEETA RANI SUMANDEEP KAUR RAMANDEEP KAUR (CLASS 8TH)
ATOM The word atom is derived from the Greek word atom which means Indivisible. The Greeks concluded that matter could be broken down into particles to small to be seen. These particles were called Atoms.
Structure of Atoms Atoms are made of three basic parts:2. Protons 3. Neutrons 4. Electrons Protons and neutrons are responsible for most of the atomic mass in a 150 person 149 lbs, 15 oz are protons and neutrons while only 1 oz.is electrons.The mass of an electron is very small.
HOW DOES AN ATOM LOOK?
Electrons Electrons are tiny,negatively charged particles that form a cloud around the nucleus of an abom. Each electron corries a single fundamental unit of negative electric charge,or -1.
Protons Protons carry a positive charge of+1,exactly the opposite electric charge as electrons.The number of probons in the nucleus debermines the botal quantity of positive charge in the atom.In an electrically neutral atom,the number of the protons and the number of electrons are equal,so that the positive and negative charges balance out to zero.The proton is very small,but it is fairly massive compared bo the other particles that make up matter.A proton`s mass is about 1,840 times the mass of an electrons.
NEUTRONS Neutrons are about the same size as protons but their mass is slightly greater without neotrons present, the repulsion among the positively charged probons would cause the nucleus to fly apart.
Electrons and its protons holds the atom together.Normally, an atom is electrically neutral,which means that the negative charge of its electrons is exactly equalled by the positive charge of its protons
PROPERTIES OF ATOMS Atoms have several properties that help distinguish one type of atom from another. • Atomic Number • Mass Number • Atomic Mass and Weight • Isotopes
• Atomic Number- Each element has a unique number of protons in its atoms.This number is called the Atomic Number. • Mass Number- The total number of Protons and Neutrons in the nucleus of an atom is the Mass Number of the Atom. • Atomic Mass and Weight- AMU is 1/12 the mass of an atom of carbon . • Isotopes-atoms of the same element that differ in mass number are called Isotopes.
PRESENTED BY:AMANDEEP KAUR SANDEEP KAUR GEETA RANI SUMANDEEP KAUR RAMANDEEP KAUR (CLASS 8TH)
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