Term
| The number written after the element to indicating the number of atoms |
|
Definition
|
|
Term
| Chemical symbols and numbers |
|
Definition
| What do chemical formulas include? |
|
|
Term
| It would change the compound |
|
Definition
| Why can't a subscript be changed? |
|
|
Term
|
Definition
| Ca(NO3)2, how many oxygen atoms are present? |
|
|
Term
| By changing its coefficient |
|
Definition
| How can you change a chemical equation in order to make it balanced? |
|
|
Term
| The elements in the parenthesis |
|
Definition
| What does the subscript after parenthesis in a chemical formula apply to? |
|
|
Term
|
Definition
| What does a coefficient tell you? |
|
|
Term
|
Definition
| What are the elements on the left side of a chemical equation? |
|
|
Term
|
Definition
| What is produced in a chemical equation? |
|
|
Term
| Matter is neither created nor destroyed |
|
Definition
| What does the Law of Conservations of Matter state? |
|
|
Term
| the number of reactans and products |
|
Definition
| What has to be equal in a chemical equation? |
|
|
Term
|
Definition
| When energy is absorbed in a chemical reaction, what is it called? |
|
|
Term
|
Definition
| When energy is released, what is it called? |
|
|
Term
|
Definition
| Energy takes the form of... |
|
|
Term
| In the molecules of the reactants |
|
Definition
| Energy that is normally released was orginally stored where? |
|
|
Term
|
Definition
| What is needed to start a chemical reaction? |
|
|
Term
| Synthesis, decomposition, single replacement, & double replacement |
|
Definition
| What are the four types of chemical reactions? |
|
|
Term
|
Definition
| When two or more simple substances combine to a new more complete substance, what type of reaction occurs? |
|
|
Term
|
Definition
| When a complex substance breaks down into more simpler substances, what type of reaction occurs? |
|
|
Term
| An uncombined element replaces an element that is part of a compound |
|
Definition
| What occurs during single replacement? |
|
|
Term
| Two compounds react to form two new compounds |
|
Definition
| What occurs during double replacement? |
|
|
Term
|
Definition
| N2 + O = N2O is an example of what type of reaction? |
|
|
Term
|
Definition
| MgCO3 + 2HCl --> MgCl2 + H2CO3 is an example of what type of reaction? |
|
|
Term
|
Definition
| H2CO3 --> H2O + CO2 is an example of what type of reaction? |
|
|
Term
|
Definition
| 2Na + 2H2O --> 2NaOH + H2 is an example of what type of reaction? |
|
|
Term
|
Definition
| What is the study of reaction rates? |
|
|
Term
| how quickly a reaction occurs |
|
Definition
|
|
Term
|
Definition
| What theory states that the rate of a reaction is affected by four factors? |
|
|
Term
| concentration, surface area, temperature, and catalysts |
|
Definition
| What are the four factors that affect the rate of a reaction? |
|
|
Term
| a substance that increases the rate of a reaction, but does not change itself |
|
Definition
|
|
Term
| the acidity of a solution |
|
Definition
| What does the pH scale measure? |
|
|
Term
|
Definition
| A chemical that has a pH level lower that 7 is a what? |
|
|
Term
|
Definition
| If a chemical has a pH level higher of 7 is a what? |
|
|
Term
|
Definition
| When a chemical has a pH level of 7 it is... |
|
|
Term
|
Definition
| What do acids and bases form when they combine? |
|
|
Term
|
Definition
| The reaction of an acid and a base to form a salt or water is called... |
|
|
