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Definition
| Substance formed when the atoms of more than one element combine. |
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Definition
| A formula that lists the elements of a compound using subscripts to indicate the number of atoms of each element |
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Definition
| A format for writing a chemical reaction listing reactants on the left, products on the right, and drawing an arrow between them. |
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Definition
| A law that states "Mass is neither created nor destroyed in chemical reactions." |
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| Law of Definite Proportions |
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Definition
| A law that states "Different samples of a pure compound always contain the same proportion of elements by mass." |
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| Law of Multiple Proportions |
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Definition
| A law that states "Elements can combine in different ways to form different chemical compounds, with mass ratios that are small whole-number multiples of each other." |
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Definition
| NA, The number of atoms in 1 mole of an element. |
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Definition
| The amount of an element whose the mass in grams is equal to the atomic mass of that element. |
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Definition
| The mass in grams of an element per 1 mole. |
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Definition
| The study of the properties and changes to atomic nuclei. |
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Definition
| An equation that represent a nuclear change of one element or isotope into another element or isotope |
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Definition
| An isotope of an element that undergoes radioactive decay. |
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Definition
| A helium nucleus consisting of two protons and two neutrons with a +2 charge. |
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Definition
| An electron emitted through radioactive decay |
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Definition
| Radioactive decay where a neutron breaks down into a proton and an electron; emitting the electron from the nucleus. |
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Definition
| The decay of an isotope where a Helium nucleus (two protons and two neutrons) is ejected. Common for heavy radioactive isotopes like Uranium-238. |
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Term
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Definition
| Electromagnetic radiation of very high energy. Almost always accompanies other forms of radiactive decay. Does not change the atomic or mass number of an isotope. |
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Definition
| Radioactive decay where a proton breaks down into a neutron and a positive particle with the mass of an electron. The positively charged particle is ejected frm the nucleus. |
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Term
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Definition
| Process where an electron is absorbed into the nucleus to combine with a proton to form a neutron. |
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