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An atom's mass number is the sum of the numbers of protons and of neutrons in the atom.
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∙ 12y ago
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Are all sample of elements are composed of atoms with same atomic mass?
All atoms in a pure sample of one element have the same mass. The atoms in a different element have a different mass. Different atoms is what makes different elements.
What is an atoms mass number?
neutrons + protons = mass number
What Make up 50 percent of the atomic mass of the nucleus?
Well, this is not exact, but smaller atoms have about the same number (and mass) of neutrons and of protons. Heavier atoms have a larger percentage of their mass in neutrons.Well, this is not exact, but smaller atoms have about the same number (and mass) of neutrons and of protons. Heavier atoms have a larger percentage of their mass in neutrons.Well, this is not exact, but smaller atoms have about the same number (and mass) of neutrons and of protons. Heavier atoms have a larger percentage of their mass in neutrons.Well, this is not exact, but smaller atoms have about the same number (and mass) of neutrons and of protons. Heavier atoms have a larger percentage of their mass in neutrons.
What particle makes up an atoms atomic mass?
the particle that is represent in the mass number is/ sum equals, protons and neutrons.
The nucleus makes up 99 percent of the atoms what?
mass
What is mass proportional to the number that makes up an object?
atoms
Are all sample of elements are composed of atoms with same atomic mass?
All atoms in a pure sample of one element have the same mass. The atoms in a different element have a different mass. Different atoms is what makes different elements.
What is an atoms mass number?
neutrons + protons = mass number
What Make up 50 percent of the atomic mass of the nucleus?
Well, this is not exact, but smaller atoms have about the same number (and mass) of neutrons and of protons. Heavier atoms have a larger percentage of their mass in neutrons.Well, this is not exact, but smaller atoms have about the same number (and mass) of neutrons and of protons. Heavier atoms have a larger percentage of their mass in neutrons.Well, this is not exact, but smaller atoms have about the same number (and mass) of neutrons and of protons. Heavier atoms have a larger percentage of their mass in neutrons.Well, this is not exact, but smaller atoms have about the same number (and mass) of neutrons and of protons. Heavier atoms have a larger percentage of their mass in neutrons.
What makes up the mass in a chemical reaction?
The atoms.
What thing makes up matter?
Mass and atoms
How can Atoms vary?
Atoms and elements can vary in many ways. Atoms mainly vary by having different numbers of protons, electrons, and neutrons. The count of protons makes up an elements mass number.
What particle makes up an atoms atomic mass?
the particle that is represent in the mass number is/ sum equals, protons and neutrons.
The nucleus makes up 99 percent of the atoms what?
mass
How do yo find an atoms mass number?
Mass number is the number of protons and neutrons in the nucleus of atom.
Most calcium atoms have an atomic number of 20 and a mass number of 40 but some calcium atoms have a mass number of 48 What word could you use to describe these two kinds of calcium atoms?
Isotopes.
What is the atoms mass number?
The Atomic Mass number tells how many protons and neutrons are in a nucleus.
