MATTER AND ITS MEASUREMENT
Matter:
- Anything that occupies space and has mass.
- It consists of tiny particles called atoms.
Parts of an Atom:
Protons, Neutrons, and Electrons
Proton:
A subatomic particle found in the nucleus of every atom. The particle has a positive electrical
charge, equal and opposite to that of the electron. A single proton has a rest mass of
1.67262x10^-27kg, just slightly less than the mass of a neutron.
Neutron:
- A subatomic found in the nucleus of every atom except that of simple hydrogen.
- No electrical charge, its neutral.
- Neutrons are extremely dense
- 1.674x10^-27kg
Electron:
- A negatively charges subatomic particle that can be either bount to an atom or free (not
bound)
- Valence electrons are loosely attached to the nucleus of a atom
- Mass in kg 9.1093837x10^-31kg
Atom and Its Sub-Atomic Particles
Proton - a particle that has a charge of +1 and a mass of 1.0073 atomic mass unit (amu)
Neutron - a particle that has no charge and a mass of 1.0087 amu
Matter:
- Anything that occupies space and has mass.
- It consists of tiny particles called atoms.
Parts of an Atom:
Protons, Neutrons, and Electrons
Proton:
A subatomic particle found in the nucleus of every atom. The particle has a positive electrical
charge, equal and opposite to that of the electron. A single proton has a rest mass of
1.67262x10^-27kg, just slightly less than the mass of a neutron.
Neutron:
- A subatomic found in the nucleus of every atom except that of simple hydrogen.
- No electrical charge, its neutral.
- Neutrons are extremely dense
- 1.674x10^-27kg
Electron:
- A negatively charges subatomic particle that can be either bount to an atom or free (not
bound)
- Valence electrons are loosely attached to the nucleus of a atom
- Mass in kg 9.1093837x10^-31kg
Atom and Its Sub-Atomic Particles
Proton - a particle that has a charge of +1 and a mass of 1.0073 atomic mass unit (amu)
Neutron - a particle that has no charge and a mass of 1.0087 amu
