| A | B |
|---|
| What is a mixture? | Two or more substances mixed to gether. An example is a salad or mixed nuts. |
| What is a solution? | A mixture formed when one or more substances disolve in another. An example is salt water. |
| What is a saturated solution? | It is when the liquid cannot disolve all of the solid material. |
| If you have a saturated solution, how can you make more of the solid dissolve? | Add more water to the solution. |
| What is a solute | As substance that dissolves in a solvent to form a solution. |
| What is a sovent? | A subsrance in which a solute dissolves to form a solution. |
| What is a chemical reaction? | The process in which more substances combine to make one or more new substances. |
| How do you know when a chemical reaction has occured? | You know id has occured when the starting substance has changed into new substances. |
| What is an atom? | The smallest part of an element. |
| What is a molecule? | Particules made of two or more atoms that are held together by bonds and created by a chemical reation. |
| What is an exampleof element? | copper |
| What happens to atoms during a chemical reaction? | They rearrange to form new substances during a chemical reaction. |
| What is a compound? | A substance made of two or more different kinds of atoms. An example is H2O. |
| What 3 elements are most abundant in the human body? | Oqygen, Carbon and Hydrogen |
| What is the most abundant molecule in the human body? | H2O |
| How many differenct elements are there in our world? | 90 |
| What are some characteristics of metals? | They are shiny, able to bend, able to stretch without breaking and they conduct heat and energy. |
| What is an alloy? | A mixture of two or more metals. Bronza and brass are examples. |
