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DE_CHEM_5.2_Solutions

Last updated over 2 years ago
27 questions
Pre-Assessment/Background Knowledge
Required
4

What do I know about solutions?

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For the following video, skip to 1:00
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1

What roles do salts play in your body?

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1

What happens to salts when placed in water?

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1

Sports drinks have a concentration of electrolytes and water that is close to the same as your body. What are some key electrolytes that you are likely to find?

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3
The human body relies on a delicate balance of solutions to function. _______ solutions exist in the blood, stomach, digestive system, and within cells. Gas solutions allow _______ to reach all parts of the body while removing _______ .
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1

What type of fluids are designed to help the body achieve equilibrium?

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2

Classify the following as either ionic or molecular by dragging each to the correct column.

  • table salt
  • calcium carbonate
  • sugar
  • water
  • potassium bromide
  • carbon dioxide
  • Ionic
  • Molecular
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2

Which two of the following correctly describe a solution?

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1

Find the molar mass of Titanium (Ti). Include units.

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1

Calculate the molar mass for magnesium sulfate (MgSO₄). Include units.

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1

Calculate the molar mass of oxygen gas (O₂). Include units.

Explore 1
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1

If you need to weigh out 1 mole of Sodium (Na)...how much would it weight?

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Is salt water a solution? How could you tell? Explain.

1

What are the two things that a solution requires?

1
Water is often referred to as the universal _______ .
1
A sugar is a(n) __________ because it is __________, contrary to a salt.
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Other Answer Choices:
solvent
solution
solute
4
A __________ is the substance that is dissolved in a solution. The solvent is the substance that dissolves the solute. Usually, there is __________ solvent than solute in a solution. For example, if you add one spoonful of sugar to a jug of water, the water is the solvent and the sugar is the solute. When two liquids are mixed together, the solute is the substance of the __________ quantity.  For example, rubbing alcohol is a liquid mixture of 70 percent isopropyl alcohol and 30 percent water. In this solution, water is considered the __________.
1

What does it mean to say you have an 'aqueous solution'?

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Why is water called 'the universal solvent'?

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The proportion of solute to solvent particles, the composition of the solute, and in concentrated aqueous solutions (high or low pH),particle interactions with the solvent and the particles in solution affect the various properties of solutions (collectively called _______ properties)
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When a water molecule combines with a hydrogen ion, it forms an ionic substance—the hydronium ion, H3O+. Hydrogen ions exist in aqueous solution as _______ ions. Positively charged hydrogen ions are attracted to the lone pair of electrons of the water molecules. In acid-base theory, the concentration of hydrogen ions is considered, but the actual concentration of hydrogen ions in solution is very _______ . In practice, the hydrogen ion and hydronium ion are functionally _______ .
10
Draggable itemCorresponding Item
solvent
any substance that dissolves to form free ions, which make the solution electrically conductive.
electrolyte
the amount of a dissolved substance per unit volume of a solution
solution
a solution containing a small amount of solute relative to the amount solvent
heterogeneous
to add a solid material to a liquid in such a way that its particles completely disperse into the liquid, usually becoming invisible within the liquid
dilute solution
made up of two or more distinct components; usually refers to a mixture in which individual substances are distinct
precipitate
made up of one uniform component; often used to describe a mixture with a consistent composition and a single phase throughout
dissolve
solid particles that have been separated from a solution
homogeneous
the substance that is dissolved in another substance
solute
a homogeneous mixture of two substances that appear as only one state of matter
concentration
the substance that dissolves another substance
1

What does it mean to say 'sports drinks have a concentration of electrolytes and water that is close to the same as your body'?

1

Often, when we lose a lot of fluids from our body i.e. you finish exercising and sweat a lot, you get sick and lose a lot of fluids from excessive vomiting or diarrhea, we can replenish the minerals we lost such as sodium and potassium by drinking what?

1

Why does a spoonful of sugar dissolve faster than a sugar cube?

6

Which factors affect the solubility of a solute?