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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| chemical change | also known as chemical reaction; substances are used up (disappear and others are formed to take their places
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| matter | anything that has mass and takes up space
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| chemistry | the science that deals with matter; the structure and properties of matter and the transformation from one form of matter to another
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| physical changes | substances that do not change. The changes only take place in their state
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| chemical properties | chemical reactions that a substance undergoes
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| physical properties | properties that do not involve chemical reactions
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| scientific method | a tool scientists use to test theories
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| fact | a statement based on direct experience
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| hypothesis | a statement that is proposed without actual proof, to explain the facts and their relationship
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| theory | the formulation of an apparent relationship among certain observed phenomena, which has been verified to some extent
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| serendipity | chance observation
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| exponential notation | based on the powers of 10
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| significant figures | number that needed to make a reasonable conclusion
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| metric system | a system of measurement that originated in France
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| International System of Units (SI) | is based on the metric system and uses some of the metric units
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| meter (m) | base unit of length
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| volume | space
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| liter (L) | base unit of volume
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| mass | the quantity of matter in an object
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| gram (g) | base unit of mass
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| weight | the force a mass experiences under the pull of gravity
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| second (s) | the base unit of timme
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| Celsius | base unit of temperature
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| Kelvin (K) | absolute scale
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| absolute value | 0K
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| factor-label method | follows the rule that when multiplying numbers, we also multiply units and when dividing numbers, we also divide units
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| gasses | has no definite shape or volume
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| liquids | have no definite shape, but they do have a definite volume that remains the same when they are poured from one container to another
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| solids | have definite shapes and volumes. They are compressible
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| destiny | mass per unit volume
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| specific gravity | numerically the same as density, but it has no units
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| enery | the capacity to do work
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| kinetic energy (KE) | the enerrgy of motion
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| potential energy | stored energy
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| law of conservation of energy | the statement that energy can be neither created or destroyed
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| heat | the form of heat that most frequently accompanies chemical reactions
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| calorie | the amount of heat necessary to raise the temperature of 1g of liquid water by 1 degree c
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| joule (J) | the official SI unit for heat
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| specific heat (SH) | the amount of heat necessary to raise the temperature of 1g of any substance by 1 degree C
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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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