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Solutions Test SFHS
Physical Science Richerson Solutions Test
| Question | Answer |
|---|---|
| What is needed for a solution to form? | solute & solvent |
| What is an example of a solute? | Salt |
| What is an example of a solvent? | water |
| What type of reaction absorbs energy? | Endothermic Reactions |
| What is an example of an endothermic reaction? | baking cookies |
| What type of reaction releases energy in the form of thermal heat? | Exothermic Reaction |
| What is an example of an exothermic reaction? | wood burning |
| Explain solubility. | It is is the maximum amount of solute that can be dissolved in a given amount of solvent at a given temperature |
| Explain saturation. | it is a solution that contains all of the solute that it can hold at a given temperature |
| Explain supersaturation | it is a solution containing more solute than a saturated solution at the same temperature |
| Explain unsaturated. | able to dissolve more solutes at certain temperatures |
| What is a substance that produces hydrogen (H) ions in a water solution? | acid |
| What is a substance that produces hydroxide (OH) ions in a water solution? | base |
| What are properties of acids? | sour taste of foods, corrosive, some react strongly with certain metals, red on litmus |
| What are properties of bases? | crystalline solids, in a solution they are slippery, bitter to taste, red litmus paper turns blue |
| What is a weak base? | ammonia |
| What is a strong base? | sodium hydroxide (NaOH) |
| What are strong acids? | HCL acid (stomach acid), car batteries (sulfuric acid), fertilizer & explosives (nitric acid) |
| What are weak acids? | vinegar (acetic acid), stinging ants (formic acid), citrus fruits (citric acid), carbonic acid |
| What is an electrolyte? | a compound that breaks apart in water, producing charged particles (ions) that can conduct electricity (electric current) |
| List 3 examples of electrolytes. | 1- sodium chloride 2- nitric acid 3- acetic acid |
| What is a solute? | in a solution, it is the substance being dissolved (examples: salt or sugar) |
| What is a solution? | homogenous mixture, remains constantly and uniformly MIXED and has particles that are so small they cannot be seen with a microscope |
| What is pH? | a measure of the concentration of hydronium ions in a solution using a scale ranging from 0 to 14, with 0 being the most acidic and 14 being the most basic |
| What number of the pH scale is considered neutral? | 7 |
| What numbers on the pH scale are considered acidic? | 0-6 |
| What numbers on the pH scale are considered basic? | 8-14 |
| What is pH the measure of? | Hydrogen ions |
| What is salt? | a compound formed when negative ions from an acid combine with positive ions from a base |
| How does soap remove dirt and oil from your skin? | long hydrocarbon ends of soap molecule mixes well with oily dirt & the ionic end attracts water molecules; dirt attached to soap will rinse away as water flows over it |
Created by:
dcrovato
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