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Biblioteka

DE_CHEM_5.2_Solutions

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Posljednje ažuriranje about 3 years ago
27
Pre-Assessment/Background Knowledge
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Pitanje 1
1.

What do I know about solutions?

Question 2
01:34
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Pitanje 2
2.

What roles do salts play in your body?

Question 3
02:19
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Pitanje 4
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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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What type of fluids are designed to help the body achieve equilibrium?

Pitanje 7
7.

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

  • table salt

  • water

  • sugar

  • potassium bromide

  • calcium carbonate

  • carbon dioxide

  • Ionic

  • Molecular

Pitanje 8
8.

Which two of the following correctly describe a solution?

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Pitanje 9
9.

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

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Pitanje 10
10.

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

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11.

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

Question 12
02:53
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Pitanje 12
12.

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

Pitanje 13
13.

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

Pitanje 14
14.

What are the two things that a solution requires?

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Drugi mogući odgovor:
solvent
solution
solute
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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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Stavka koja se može prevućiarrow_right_altOdgovarajuća stavka

dissolve

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any substance that dissolves to form free ions, which make the solution electrically conductive.

precipitate

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the amount of a dissolved substance per unit volume of a solution

solvent

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a solution containing a small amount of solute relative to the amount solvent

solute

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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

solution

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made up of two or more distinct components; usually refers to a mixture in which individual substances are distinct

concentration

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made up of one uniform component; often used to describe a mixture with a consistent composition and a single phase throughout

electrolyte

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solid particles that have been separated from a solution

dilute solution

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the substance that is dissolved in another substance

homogeneous

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a homogeneous mixture of two substances that appear as only one state of matter

heterogeneous

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the substance that dissolves another substance

Pitanje 24
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What does it mean to say 'sports drinks have a concentration of electrolytes and water that is close to the same as your body'?

Pitanje 25
25.

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?

Pitanje 26
26.

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

Pitanje 27
27.

Which factors affect the solubility of a solute?

Pitanje 3
3.

What happens to salts when placed in water?