Vocabulary I
Vocabulary II
Vocabulary III
100
True or False? Red litmus paper changes color with acids.
False. Acids do not change the color of litmus paper
100
All acids contain the chemical _______________
Hydrogen
100
What 3 factors effect solubility?
Increase in surface area heat Agitate or heat
200
All bases contain special groups of oxygen and hydrogen atoms called hydroxides (OH-). True or False
What is TRUE
200
What is a solute?
Substance being dissolved
200
What factors affect the rate of dissolution?
Amount of solute Amount of solvent Specified temperature
300
Phenolphtalein and litmus paper are ________________.
Indicators.
300
What is solvent?
Solvent is the substance doing the solving; when water is used it is called an aqueous (liquid) solutions
300
What is a solubility curve?
Solubility curve shows the trend n solubility of a substance at a given temperature range.
400
What is an acid?
Acids are special kinds of chemicals. Some are safe, some are harmful; some weak and some strong. Many acids are dangerous to touch or taste. Never taste an unknown acid. Acids have a sour taste and turns blue litmus paper red. When mixed with metals, a chemical reaction occurs - hydrogen gas is released.
400
There are 3 types of mixtures: Name two and give 2 specific details about each.
Solution- small particle size, homogenous uniformity, can't be filtered. Colloid - mediam particle size; heterogenous uniformity, Tyndall Effect Suspension - larger particles, heterogenous uniformity, can be filtered
400
Can you separate a mixture of solids by their characteristic properties? Name the 3 substances used in the class experiment. What characteristic property allowed you to separate each substance?
Yes Sand Salt Iron Filings Solubility
500
What are bases?
Bases have properties that are different from acids. Often act opposite of acids. Bases have a bitter taste, feel slippery, turn RED litmus paper BLUE, and do not wear away metals.
500
What is solubility?
Solubility is the maximum quantity of a solute that can be dissolved in a given amount of solvent at a specific temperature.
500
Explain how each substance was separated in the Separation of Solids experiment.
Sand - Filtered out of water Salt dissolved in water - used heat to evaporate the water to leave the salt Iron filings - magnetic
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