Definitions

1. The atomic mass unit is also the name for two older units (both having the symbol amu) that are very similar to the modern atomic mass unit (see History).
2. The atomic mass unit (u) is defined so that a single carbon-12 atom has a mass of 12 u; 1 u is approximately 1.66 × 10 −27 kg.
3. An atomic mass unit is equal to 1.66054 x 10 -24 grams. (Web site)
4. In atomic mass unit, the mass of the proton is 1.007 276 466 88(13) u while that of the neutron is 1.008 664 915 60(55) u. (Web site)
5. An atomic mass unit is 1.66 × 10 −24 g, for roughly 40 atoms per cubic meter.

Average Atomic Mass

1. For example, a sample of chlorine contains 75.8% chlorine-35 and 24.2% chlorine-37, giving an average atomic mass of 35.5 atomic mass unit s.

Weight

1. The debate was largely created by the adoption of the unified atomic mass unit and the realization that weight was in some ways an inappropriate term. (Web site)

Masses

1. The masses of sub-atomic particles are often expressed in � atomic mass unit (amu)�.

Mass

1. Atomic mass unit (amu): 1 amu is equal to one twelfth of the mass of a carbon-12 atom. (Web site)
2. The main table there gives a "mass excess", defined as the mass of an atom minus its mass number times the "atomic mass unit". (Web site)

Tiny Fraction

1. Since the mass of an electron is a tiny fraction of an atomic mass unit, the mass of a nucleus that undergoes b decay is changed by only a tiny amount. (Web site)

Mass-Energy Equivalence

1. Experiments re Mass-Energy Equivalence In text books, it is said that one atomic mass unit (1a.m.u.) is equal to 1.66 ´10-27 kg (approximately). (Web site)

Electron Volt

1. Atomic scale units used in physics and chemistry, such as the ångström, electron volt, atomic mass unit and barn.

Neutron

1. The unified atomic mass unit, denoted u, is roughly equal to the mass of one proton or neutron. (Web site)

Atom

1. An atom has a mass approximately equal to the mass number times the atomic mass unit. (Web site)

Subatomic Particle

1. Neutron: A subatomic particle with a mass of about one atomic mass unit and no electrical charge. (Web site)

Proton

1. The ratios of atoms are in small whole numbers (H2O and H2O2) Atomic Mass Unit the mass of a proton or neutron is equal to 1 atomic mass unit. (Web site)
2. The atomic mass unit, 1 gram divided by Avogadro's number, is almost the mass of a hydrogen atom, which is mostly the mass of the proton. (Web site)
3. Proton: A subatomic particle with a mass of about one atomic mass unit and a single positive charge. (Web site)

Units

1. The units of mass used to describe atomic particles is the atomic mass unit (or amu). (Web site)

Unit

1. Atomic mass unit (amu): A unit of mass measurement for small particles. (Web site)

Dalton

1. Their molecular weights are expressed in Daltons, where 1 Dalton is equal to 1 atomic mass unit (the weight of one hydrogen atom).
2. The mass of an atom at rest is often expressed using the unified atomic mass unit (u), which is also called a Dalton (Da).

Unified Atomic Mass Unit

1. The symbol amu for atomic mass unit is not a symbol for the unified atomic mass unit. (Web site)
2. However, the accepted standard is now the unified atomic mass unit (symbol u), with: 1 u = 1.000 317 9 amu (physical scale) = 1.000 043 amu (chemical scale). (Web site)
3. Since 1961, by definition the unified atomic mass unit is equal to one-twelfth of the mass of a carbon-12 atom.

Atomic Masses

1. Atomic masses are often written without any unit and then the atomic mass unit is implied.
2. Atomic masses are often written without any unit and then the unified atomic mass unit is implied.

Atomic Mass

1. The atomic mass, on the other hand, is measured using the atomic mass unit based on the mass of the carbon atom. (Web site)
2. Because of the definition of the unified atomic mass unit, carbon has an atomic mass of exactly 12 u, and so a mole of carbon atoms weighs exactly 0.012 kg.

Amu

1. The atomic mass unit (amu), unified atomic mass unit (u), or dalton (Da), is a small unit of mass used to express atomic masses and molecular masses.
2. Atomic mass unit (amu): A unit used to express the mass of an atom equal to exactly one-twelfth the mass of a carbon-12 atom. (Web site)
3. The mass of a proton or neutron is 1.66 E -24 grams or one AMU, atomic mass unit. (Web site)

Atomic Mass Unit

1. Unit for mass of atom is referred to as atomic mass unit (amu) Standardized against atomic mass of 12C - as 12 amu i.e. (Web site)
2. The unit of atomic weight is presently also called atomic mass unit (amu), unified atomic mass unit (u) and Dalton (Da). (Web site)
3. A neutron, like a proton, contributes one atomic mass unit to the total atomic weight of an atom.

Categories

1. Amu
2. Atomic Mass
3. Small Unit
4. Atomic Weight
5. Dalton
6. Books about "Atomic Mass Unit" in Amazon.com
   

Continue: More Keywords - - - - - - - - - -