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All the atoms of an element are the same true or false?
A piece of pure Iron contains only one type of atom (Iron atoms) but there is more than one atom in it.
True or false The number of neutrons is equal to the atomic number?
False. The number of neutrons is not equal to the atomic number. Neutrons are particles found in the nucleus of an atom and their number can vary, whereas the atomic number corresponds to the number of protons in an atom.
The number of neutrons is equal to the atomic number true or false?
False as a generalization but true for some isotopes. The atomic number is the number of protons in a nucleus, which may coincidentally be the same as the number of neutrons but is not required to be.
Changing subscripts is one of the steps of balancing a chemical equation.?
Changing subscripts means adjusting the number of atoms of each element in a chemical compound to ensure that both sides of the equation have the same number of atoms for each element. This step is necessary to balance the equation and satisfy the law of conservation of mass..ToDecimalDigits
What is element about 78 percent of the earth's atmosphere?
The element Nitrogen (N) makes up about 78% of the Earth's atmosphere. Nitrogen is a gas at room temperature and has the atomic number 7. Nitrogen is in Period 2 of the Periodic Table and is the first element in Group 15(5).
Was Dalton's hypothesis that atoms are indivisible and all atoms of an element are identical?
That was part of his atomic theory. We know now that that part of his atomic theory was incorrect.
The atomic number of isotopes is determined by the number of atoms. true or false?
False. Number of neutrons.
The number of atoms in a mole of an element depends on what the element is. true or false?
True. The number of atoms in a mole of an element is determined by Avogadro's number, which is a constant (6.022 x 10^23) regardless of the element being considered. Each element's molar mass in grams is equal to one mole of that element's atoms.
True or false atoms of different elements have the same never of protons?
All atoms of the same element are the same.7) Isotopes are a family of atoms all of which have the same number of electrons, have the same number of protons in their atomic centers, but different numbers of neutrons.
The atomic number for an element is the total number of subatomic particles?
False; the atomic number is the total number if protons in the nucleus only.
An element is a substance composed of atoms that all have the same number of electrons?
No . all the atoms have same no of protones.....
All the atoms of an element are the same true or false?
A piece of pure Iron contains only one type of atom (Iron atoms) but there is more than one atom in it.
What are charged atoms of elements that have a unique number of protons and electrons?
Each atom of an element has the same number of protons which is unique for that particular element ( = atom number in the periodic system)
Atoms of different elements have different number of protons true or false?
No atom has the same number of protons as another atom, unless both atoms are atoms of the same chemical element.
Are the number of neutrons equal to the atomic number minus the atomic mass?
false
an element is a substance composed of atoms that all have the same number of protons.True or false?
True apex
An element cannot be changed by any physical or chemical means because those changes do not affect the atom's number of neutrons?
This statement is incorrect. An element is defined by its number of protons, known as its atomic number. Changing this number would result in a different element. Physical and chemical changes can alter the arrangement of atoms in a substance without changing its fundamental identity as an element.
