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science 6th grade
lesson 2-4
| Question | Answer |
|---|---|
| the way a substance reacts with other substances | chemical property |
| how easily something reacts with something else | reactivity |
| a substance that has a ph below 7, taste sour, makes blue litmus paper turn pink or red | acid |
| substance that has a ph above 7, taste bitter and makes red litmus paper turn blue | base |
| the chemical change of an acid and a base into water and salt | neutralization |
| In addition to physical properites, substances have ________________ that describe how a substance reacts with other usbstances. | chemical properties |
| How easily one substance reacts with another substance is called _____________________. For example, sodium is a substance that reacts strongly with ______________. | reactivity water |
| The abiliity to catch on fire or burn is called________________. | falmmability |
| Hydrogen, methane, and paper are ; ____________ they easily catch fire. | flamable |
| Substances containing ________________ are often placed on mathc heads to help ignite the match. | phosphorus |
| The ability to rust is another chemical property. WHen irn reacts with ______________ it forms rust, or iron oxide. | oxygen |
| The ability to not ______ with other substances is another chemical property. | react |
| Litmus paper and red-cabbage juice are called ______________ because they change colors when miced with an acid or a base. | indicators |
| The ______ scale measures how acidic or basic something is. | PH |
| The liquid in your stomach has a pH of about 2, so it is a ___________________ | acid |
| Ammonia has a pH of about 11, which means that it is a ___________. | base |
| Acid makes ____________ litmus paper turn pink or red. | blue |
| Acids release ___________ ions in a solution. | hydrogen |
| Many acids react with certain ___________ and limestone. | metal |
| Bases turn red litmus paper _____________. | blue |
| Bases release ___________ions in a solution. | hydroxide |
| Bases fell _____________ to the touch becasue the react with proteins in your skin. | slippery |
| When an acid and a base are mxed, a process called ________ produces water and a salt. | neutralization |
| In neutralization, the acid and base ___________ each other's properties. | cancel |
| Matter can be described by physical and chemical __________.Example ____________ is reddish brown in color and reacts with substances in the air. | properties copper |
| A solution has a pH of 5 How will the solution taste? What would it react with to form a salt? | The solution is acidic, so it would taste sour and would react with a base to form a salt. |
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Ouellettegirls