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Solutions and Electrolytes

Authored by Lisa Thompson

Science

10th Grade

NGSS covered

Solutions and Electrolytes
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15 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

An electrolyte is

a metal

a solution

a liquid that conducts current

all of above

Tags

NGSS.HS-PS2-5

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

the phenomenon of decomposition of an electrolyte when electricity is passed through is known as

conduction

coating

electrolysis

electrorefining

Tags

NGSS.HS-PS2-5

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

sea water is an example of

bad conductor

strong electrolyte

weak electrolyte

none of these

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A technican prepared a solution by heating 100 mL of distilled water while adding KCl crystals until no more KCl would dissolve. She then capped the clear solution and set it aside on the lab counter. After several hours she noticed the solution had become cloudly and some solid had settled to the bottom of the flask. Which statement best describes what happened?

As the solution cooled, evaporation of water increased the KCl concentration beyond its solubility.

Water molecules, trapped with the KCl crystals, were released after heating.

At lower temperatures the solubility of KCl decreased and recrystallization occurred.

At increased temperatures the solubility of KCl increased and remained too high after cooling.

Tags

NGSS.MS-PS1-4

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If an electrical current can run through a solution, it is said to contain

magic

nonelectrolytes

electricity

electrolytes

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

You can make a solid solute dissolve more quickly in a solvent by

adding more solute.

adding ice.

heating the solvent.

removing some solvent.

Tags

NGSS.MS-PS1-4

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A solution that contains all of the solute it can hold at a given temperature is

diluted.

saturated.

supersaturated.

unsaturated.

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