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Solutions Test SFHS

Physical Science Richerson Solutions Test

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