| A | B |
|---|
| scientific method | Method used by scietists to solve problems. |
| problem | something that causes difficulty or confusion. |
| research | using a variety of resources to learn about something |
| hypothesis | educated guess |
| results | the outcome of an experiment |
| conclusion | what is learned at the end of an experiment |
| atom | the smallest bit of matter |
| proton | positively charged particles found in the nucleus of an atom |
| neutron | particle having no charge found in the nucleus of an atom |
| neutral | having no charge |
| quark | basic building block of a proton |
| electron | negatively charged particle |
| mass | the amount of matter in something |
| solid | state of matter that has a definite shape and definite volume |
| liquid | state of matter that has a definite volume but no definite shape |
| gas | the state of matter that has no definite shape or volume |
| physical property | a characteristic that can be measured or observed |
| chemical property | the ability of a substance to react with another |
| physical change | a change that results only in the change of physical properties where the identity of the substance remains the same |
| chemical change | a change that results in a new substance with new chemical properties |
| solvent | the substance in which a solute is dissolved |
| substance | anything that is made up of one kind of material |
| suspension | a liquid-containing mixture where the particles are unevenly mixed and settle out upon standing |
| unsaturated | where a solvent in a solution can still dissolve more solute |
| compound | a material that is made up of 2 or more elements that are chemically combined |
| atom | the smallest bit of matter |
| element | a substance that cannot be broken down further by ordinary chemical or physical means; example: silver |
| colloid | a mixture of medium size particles that do not settle out, but do scatter light |
| density | the measure of an object's mass as compared to its volume |
| dilute | a solution with a small amount of solute |
| heterogeneous mixture | a mixture that contains particles that are unevenly distributed |
| mixture | any substance where 2 or more substances are combined in such a way that each substance keeps its own properties |
| saturated | this happens when a solvent cannot dissolve any more solute |
| solubility | the ability of a substance to dissolve in a solvent at a given temperature |
| solute | any substance that dissolves in a solvent to form a solution |
| solution | a mixture made up of tiny particles that are evenly distributed and do not settle out or scatter light |
