Science Vocab Unit 3
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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| Molecule | a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
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| Chemical Bond | a strong force of attraction holding atoms together in a molecule or crystal, resulting from the sharing or transfer of electrons.
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| Chemical Formula | a set of chemical symbols showing the elements present in a compound and their relative proportions, and in some cases the structure of the compound.
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| Compound | a substance that is composed of two or more separate elements
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| Element | each of more than one hundred substances that cannot be chemically interconverted or broken down into simpler substances and are primary constituents of matter.
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| Chemical Reaction | a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.
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| Reactant | a substance that takes part in and undergoes change during a reaction.
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| Product | A new material formed in a chemical reaction
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| Open System | mass is CONSERVED inside the system but energy enters and leaves the system freely.
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| Closed System | a system that can EXCHANGE energy (as heat or work) but not matter, with its surroundings.
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| Law of Conservation of Mass | Mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations.
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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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