chapter 17 vocabulary Emma Brinson 9/27/10 period B
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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| atoms | the smalest particle of an element that can be identified witht hat element; consists of protons and neutrons in the nucleus surrounded by electrons.
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| elements | a substance made of only one kind of atom; examples of elements are carbon hydrogen, oxygen, and nitrogen.
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| Browian motion | the perpetual random movement of microscopic particles suspended in a fluid medium.
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| molecule | the smallest particle of substance consisting of two or more atoms of teh same or different elements bonded together.
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| compound | a chemical substance made of atoms of two or more different elements combined in a fixed proportion.
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| chemical formula | a description that uses number and symbols of elements to describe the proportions of elements in a compound or reaction.
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| nucleus | the positively charged center of an atom, which contains protons and neutrons and has almost the entire mass of the entire atom but only a fraction of the volume.
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| nucleons | the principle building block for the neucleus; a neutron or proton.
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| neutrons | an electrically neutral particle that is one of two kinds of particles found in the nucleus of an atom.
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| protons | a positively charged particle that is one of two kinds of particles found in the nucleus of an atom.
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| isotopes | a form of an element having a particular number of nuetrons in the nuclei of its atoms.different isotopes of a particular elementhave the same atomic number but different atomic mass nmbers.
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| atomic number | number of protons in the nucleus of an atom.
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| ion | an atom (or group of atoms bound together) with anet electric charge, which is due to loss or gain of electrons.
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| shell model of the atom | a model in which the electrons of an atom are pictured as grouped in concentric shells around the nucleus.
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| periodic table | a chart that lists elements by atomic number, and by electron arrangements, so that element with similiar chemical properties are in the same column.
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| plasma | the fourth phase of matter; in addition to solid, liquid and gas. In the plasma stage, which exists mainly at high temperatures,matter consists of positively charged ions and free electrons.
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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.
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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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