BJU Physical Science - Ch 2 6th edition
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| atom | The building block of all matter; consists of protons, electrons, and (usually) neutrons.
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| compound | A pure substance consisting of atoms of two or more elements that are chemically combined in a fixed ratio.
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| density | The mass per unit volume of an object.
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| element | A pure substance that consists of atoms with the same atomic number.
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| gas | The state of matter in which particles are far apart, move rapidly, and have little interaction with each other.
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| heterogeneous mixture | A mixture that does not have a uniform appearance since the combined substances are unevenly distributed.
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| homogeneous mixture | A mixture that has a uniform appearance throughout; also known as a solution, especially of a solid dissolved in a liquid.
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| law of definite proportions | The law that states that the masses of chemical substances combine in definite, characteristic integer ratios when forming compounds.
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| liquid | The state of matter in which particles are close together but able to move around.
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| mass | The measure of the amount of matter in an object.
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| matter | Anything that has mass and occupies space.
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| mixture | A physical combination of two or more substances in a changeable ratio.
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| molecule | A particle consisting of two or more atoms covalently bonded together.
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| particle model of matter | A model that states that all physical matter exists in the form of particles.
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| plasma | A gas-like state of matter, formed at very high temperatures, that consists of high-energy ions and free electrons.
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| pure substance | A material made of only one kind of element or compound.
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| solid | The state of matter in which particles vibrate in fixed positions, giving a substance a fixed shape and volume.
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| volume | The space enclosed or occupied by an object.
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| weight | The force of gravity acting on the matter in an object.
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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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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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