Apologia Chemistry Module 4
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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| Pure substance | A substance that contains only one element or compound
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| Mixture | A substance that contains different compounds and/or elements
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| Homogeneous mixture | A mixture with a composition that is always the same no matter what part of the sample you are observing
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| Heterogeneous mixture | A mixture with a composition that is different depending on what part of the sample you are observing
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| Chemical change | A change that affects the type of molecules or atoms in a substance (e.g. reacting, not easily reversed)
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| Physical change | A change in which the atoms or molecules in a substance stay the same (e.g. dissolving, can usually be reversed relatively easily)
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| Kinetic theory of matter | Molecules and atoms are in constant motion, and the higher the temperature, the greater their speed
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| Homonuclear diatomics | Elements composed of individual molecules, not individual atoms:
N₂ O₂ F₂ Cl₂ Br₂ I₂ At₂ H₂
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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:
thomas.macri
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