This is a set of keywords from chapter.29 and 30
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Atom | Is the smallest particle of an element which still retains the properties of that element
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| Proton | Protons are a sub-atomic particle found in the nucleus of an element. Protons have a positive charge ( 1 amu )
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| Electron | Electrons are a sub-atomic particles found in the outer shells of an element. Electrons have a negative charge. ( 1/1840 amu )
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| Neutron | Neutrons are a sub-atomic particles found in the nucleus of an element. They have a zero/ neutral charge. ( 1 amu )
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| Atomic mass unit | Amu - unit used to measure the mass of sub-atomic particles
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| Sub-Atomic Particles | Tiny particles inside an atom
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| Planetary Number | The way in which electrons move about the nucleus in fixed paths called orbits or shells
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| Atomic Number | Number of protons in that atoms nucleus
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| Atomic Mass | The sum of the number of protons and neutrons
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| N= number | N= the number of shells an atom has
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| Group | Elements with similar properties are arranged under one another in vertical columns the columns are called groups
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| Period | These are the horizontal rows of elements
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| Alkali Metals | Are elements in group 1
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| Alkaline Earth Metal | Are elements in group 2
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| Halogens | Are elements in group 7
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| Nobel Gases | Are elements in group 8. They do not react with other elements
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| Periodic Table | Arrangement of elements in order of increasing atomic number
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| Isotopes | Atoms of the same element that have different numbers of neutrons in the nucleus
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| Mendeleev | He was a Russian chemist who arranged all the known elements in the form of a table. Because the properties of the elements repeated themselves it is known as the periodic table
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| Dalton | English scientist who put forward his theory of the atomic structure. He said atoms could not be divided into anything simpler
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| Niels Bohr | Proposed that electrons orbit the nucleus in fixed paths called orbits. These orbits are called shells
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| Molecule | A group of atoms joined together. It is the smallest particle of an element that can exist independently
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| Octect rule | Atoms strive to have 8 electrons in their outer shell to make them stable
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| Ionic bonding | A force of attraction between positive and negative ions in a compound
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| Covalent bonding | When electrons are shared between atoms
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| Ion | Chemically charged element
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| Reduction | When an atom gains an electron
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| Oxidation | When an atom loses an electron
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
Annieramsden
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