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science
| Question | Answer |
|---|---|
| he study of matter and how matter changes is called | chemistry |
| The production of one or more new substances is the only definitive way to tell that a ________reaction has occurred | chemical |
| CaCO3 and NaCl are both examples of a | chemical formula |
| CaCO3 and NaCl are both examples of a | catalyst |
| is used to decrease the rate of a chemical reaction. | inhibitor |
| In the chemical equation above, sodium reacts with oxygen in a | 2 to 1 |
| The principle of_______ states that "Mass is neither created, nor destroyed" | conservation of mass |
| This principle is true for reactions in both and and | open, clothes |
| if you are looking to supply to begin a reaction you could heat the reaction flask on a hot plate. | activation energy |
| _ act as biological catalysts by speeding up reactions in living things. | enzymes |
| If a bottle of hydrogen peroxide eventually turns into a bottle of water and oxygen gas, it has gone through a | decomposition |
| _ is a solid that forms from solution during a chemical reaction | precipitate |
| In a chemical equation, the substances written on the left side of the arrow are | reactants |
| the substances written on the write side of the arrow are | products |
| A mistake in the design of an experiment that makes a certain result more likely is called | experimental bias. |
| The minimum amount of energy that must be added to start a chemical reaction is called the | activation energy. |
| a chemical reaction in which two or more simple substances combine to form a new, more complex substance | synthesis |
| a chemical reaction that breaks down compounds into simpler products | decomposition |
| a reaction in which one element replaces another in a compound or when two elements in different compounds trade places | replacement |
| When existing bonds break and new bonds form, a _reaction has occurred. | chemical |
| The amount of __ in a chemical reaction stays the same. | matter |
| The rate of a chemical reaction is ____ on temperature | dependant |
| _ reasoning relies on gathering and evaluating evidence, while _ reasoning is based off of personal perspective or preference. | objective, subjective |
| Observing changes in the properties of matter would indicate a _ reaction has occured | chemical |
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