Chapter 1
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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| Chemistry | is the study of the properties of the matter and how changes
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| Element | is a substance that cannot be broken down into any other substances by chemical or physical means
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| Compound | is a substance made of two or more elements chemically combined in a specific ratio, or proportion.
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| Mixture | is made from two or more pure substances - elements, compounds, or both - that are in the same place but not combined as a new material.
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| Solution | is a well-mixed mixture.
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| Physical Change | A change that alters the form or appearance of a material but does not make the material into another substance
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| Chemical Change | A change in matter that produces new substances
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| Precitate | A solid that forms from solution during a chemical reaction
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| Atom | The smallest particle of an element
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| Molecule | is the combination of 2 or more atoms
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| Chemical bond | The force that holds atoms together
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| Chemical equation | is a shorter, easier way to show chemical reactions, using symbols instead of words.
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| Symbol | most elements are represented by a one-letter or 2 letter
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| Chemical formula | shows the ratio of elements in the compound
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| Subscript | shows the number of atoms of an element in a molecule
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| Reactants | The materials you have at the beginning of a chemical reaction
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| Products | when the reactant is complete
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| Conversation of matter | the principle stating that matter is not created or destroyed during a chemical reaction
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| Coefficient | is a number in front of a chemical formula in the equation
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| Synthesis | When two or more substances combine to make a more complex substance
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| Decomposition | A reaction that breaks down compounds into simpler products
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| Replacement Reaction | A reaction in which one element replaces another in a compound or in which two elements in different compounds trade places
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| Exothermic Reaction | A reaction that releases energy in the form of heat
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| Endothermic reaction | A reaction that absorbs energy
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| Activation Energy | is the minimum amount of energy that has to be added tp start a reaction
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| Consecration | is the amount of one material in a given volume of another material
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| Catalyst | is a material that increases the rate of a reaction by lowering the activation energy
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| Enzymes | Provide a surface on which reactions take place
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| Inhibitor | A material used to decrease the rate of a reaction
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| Combustion | Is a rapid reaction between oxygen and a substance called a fuel
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| Fuel | Is a material that releases energy when it burns
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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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