Term
| What is a pure substance? |
|
Definition
| always has the same composition and properties. |
|
|
Term
| What are the two types of pure substances? |
|
Definition
|
|
Term
|
Definition
| is a pure substance that is made up of two or more elements that are chemically combined. |
|
|
Term
| What is the chemical formula? |
|
Definition
| an abbreviation that shows how many atoms of an element exist in a compound. |
|
|
Term
EXAMPLE #1-
Carbon Atom- ?
Oxygen Atom- ?
Formula- ? |
|
Definition
|
|
Term
EXAMPLE #2-
Carbon Atom- ?
Oxygen Atom- ?
Formula- ? |
|
Definition
|
|
Term
EXAMPLE #3-
(Nail Polish)
Carbon Atom- ?
Hydrogen Atom- ?
Oxygen Atom- ?
Formula- ? |
|
Definition
|
|
Term
EXAMPLE #4-
Hydrogen Atom- ?
Oxygen Atom- ?
Formula- ? |
|
Definition
|
|
Term
| All matter can be classified as either...? |
|
Definition
| a pure substance or a mixture |
|
|
Term
|
Definition
| has a definite composition and the same compositon and properties regardless of where it comes from. |
|
|
Term
|
Definition
| will be different every time. Ex- take one handfull of trail mix and sort them out. Take another handful and it will not be the exact same. |
|
|
Term
| The properties of a compound are usually different from the properties of the elements it is made up of. |
|
Definition
|
|
Term
| In a mixture, the component parts keep their properties. You can use those properties to separate a mixture. |
|
Definition
|
|
Term
| Elements that combine to form compounds usually do not keep their original properties. |
|
Definition
|
|
Term
|
Definition
| a force of attraction between atoms or ions. Once a compound forms, only another chemical change breaks the bond. |
|
|
Term
| What are the two common types of chemical bonds? |
|
Definition
| covalent bond and the ionic bond |
|
|
Term
| How is a covalent bond formed? |
|
Definition
| when two atoms share their outermost electrons. A group of two or more atoms held together b covalent bonds is called a molecule. |
|
|
