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12 Cards in this Set
- Front
- Back
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Proton number. |
Proton number is the number of proton in the nucleus of an atom. |
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Nucleon number. |
Nucleon number is the total number of proton and number of neutron in the nucleus of an atom. |
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Isotopes. |
Isotopes are the atom of the same element with the same proton number but different nucleon number because they have different number of neutron. |
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Relative atomic mass (R.A.M.). |
The relative atomic mass is the average mass of one atom of the element when compared with 1/12 of the mass of a carbon-12 atom. |
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Relative molecular mass (R.M.M.). |
The relative molecular mass of molecule is the average mass of the molecule when compared with 1/12 of the mass of carbon-12 atom. |
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Mole. |
One mole is an amount of substance which contains the number of particles similar to number of atoms in exactly 12g of carbon-12. |
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Avogadro constant. |
The Avogadro constant is defined as the number of particles in one mole of a substance, which has a value of 6.02×10^23. |
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Chemical formulae. |
A chemical formula is a representation of a chemical substance using letters for atoms and subscript numbers to show the numbers of each type of atoms that are present in the substance. |
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Empirical formula. |
Empirical formula is a chemical formula which shows the simplest whole number ratio of atoms of each element in the compound. |
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Molecular formula. |
Molecular formula is a chemical formula which shows the actual number of atoms of each element that is present in the molecule of the compound. |
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Ionic bond. |
An ionic bond is the chemical bond formed through the transfer of electrons from metal atoms to non-metal atoms. |
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Covalent bond. |
A covalent bond is the chemical bond formed through the sharing of electrons between non-metal atoms. |
