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25 Cards in this Set
- Front
- Back
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Mr. Dawson
Integrated Sciences Chapter 6 - TEST |
cut apart and study
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Of the following: identify the heterogeneous mixture - pasta salad, milk, salt water, olive oil
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pasta salad
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Is this a suspension or a colloid: a mixture that separates into different layers when you stop sirring it.
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a suspension
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How do you usually filter out large particles in a suspension?
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by using a paper filter to catch the particles
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Why does loose sugar dissolve faster than a sugar cub?
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because loose sugar has a greater surface area
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All of the following will make it easier to dissolve a solute in a solvent:
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1) heating the solvent
2) stirring the solution 3) increasing the surface area of the solute |
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Explain what an unsaturated solution is?
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it is a solution that can dissolve more solute at the current conditions
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What does the pH of a substance measure?
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it measures the hydronium ion concentration
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What is formed when a solution of an acid reacts with a solution of a base, the hydronium ions react with hydroxide ions and form?
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the reaction forms water
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Of the following, which is a basic solution: vinegar, household ammonia, pure water
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the answer is household ammonia
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What type of juice on a piece of cut apple will prevent something?
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if you put lemon juice on a piece of cut apple it will prevent the fruit from turning brown
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What happens when a supersaturated solution cools down?
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the solute will precipitate out of the solution
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What type of substance form hydronium ions when dissolved in water?
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ACIDS
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If a substance has a pH of 13, is the substance: strongly acidic or is it strongly basic
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STRONGLY BASIC
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How does soap remove grease and oil from your skin?
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it acts as an emulsified to surround the oil
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Which of the following is an immiscible substance: sugar and water or rocks and water or oil and water?
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the answer is OIL and WATER
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A strong base can conduct electricity well because....
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it contains the maximum amount of hydroxide ions
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Thinking of pH, which of the following numbers would be the most acidic?
pH of 2.6, pH of 4.1, pH of 1.9 |
the most acidic would be a pH of 1.9
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Thinking of pH, which of the following numbers would be the least acidic?
pH of 2.6, pH of 4.1, pH of 1.9 |
the least acidic would be a pH of 4.1
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Look at the pH scale:
0 - 6 7 8 - 14 |
0 - 6 = ACIDIC
7 = NEUTRAL 8 - 14 = BASIC |
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Understand that on the pH scale:
0 - 6 is ACIDIC 7 = NEUTRAL 8 - 14 is BASIC |
Draw a sample pH scale:
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Explain why it would be difficult to separate two miscible liquids by distillation that have similar boiling points?
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It is difficult to separate two miscible liquids with similiar boiling points because one would not boil off and leave the other behind
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How does an antacid work on your stomach acid also called an upset stomach?
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it is a weak base that neutralizes stomach acid.
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If you have a strong acid, would it contain the maximum concentration or the least amount of concentration of hydronium ions?
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a strong acid contains the maximum concentration of hydronium ions
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In a BASIC solution, how many times hydroxide ions as hydronium ions is there?
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There are FOUR times as many hydroxide ions as hydronium ions in a BASIC solution.
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