Biology Chapter 2
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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| Compound | substance containing two or more elements that are chemically combined in a fixed ratio.
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| matter | anything that occupies space and has mass
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| element | pure substance that can't be broken down into other substances by chemical means
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| nitrogen, hydrogen, oxygen, carbon | What are the 4 main elements of life?
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| What is an isotope? | an element with the same number of protons, but a different number of neutrons
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| molecule | Two or more atoms held together by covalent bonds
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| ionic bonds | The bond where electrons are transferred
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| covalent bond | The bond where electrons are shared.
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| Polar molecule | A molecule that has opposite electric charges on opposite ends
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| cohesion | The tendency of molecules of the same kind to stick to one another.
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| adhesion | The attraction between unlike molecules
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| Acid | A solution with more H+ ions
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| Base | A solution with more OH- ions
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| valence electrons | Electrons involved in bonding (at the outermost shell)
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| hydrophilic | Attracting water molecules
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| functional group | A group of atoms within a molecule that interacts in predictable ways with other molecules.
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| dehydration | Polymers are formed through a dehydration reaction.
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| Hydrolysis | Polymers are broken down through a hydrolysis reaction
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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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