Chemistry Practical an der Ahfad University For Women | Karteikarten & Zusammenfassungen

Lernmaterialien für chemistry practical an der Ahfad University for Women

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indicator

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is a substance that changes it color according to it medium

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molarity

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A concentration unit (M); defined as the number of moles of solute divided by liters of solution.

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contact lenses are not permitted in the laboratory 

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certain chemical vapors may cause eye irritation when contact lenses are worn 

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never add boiling chips to a hot solution 

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adding  boiling chips to a hot solution may cause it to boil over rapidly

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when heating liquids in a test tube , hold the test tube with a test tube clamp at an ___ over the flame .

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45 degree angle 

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never heat a liquid in a test tube with the test tube opened end pointed toward another person.

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inhaling the vapors and gases resulting from the heating may affect the person's health

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solvent

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The substance which does the dissolving (typically a liquid, such as water or alcohol). Must be greater than 50% of the solution

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solute

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The substance which is dissolved, or has gone into solution (typically a solid)

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solution

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A  homogeneous mixture of two or more substances. in a solution one pure substance is dissolved in another pure substance homogeneously The individual substances may be present in varying amounts

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report mercury spills from a broken thermometer to the instructor and should be disposed immediately 

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because mercury is toxic 

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concentration

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The relative amount of solute and solvent in a solution

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never return unused chemical to a reagent bottle

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doing so may contaminate the reagent bottle

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Beispielhafte Karteikarten für deinen chemistry practical Kurs an der Ahfad University for Women - von Kommilitonen auf StudySmarter erstellt!

Q:

indicator

A:

is a substance that changes it color according to it medium

Q:

molarity

A:

A concentration unit (M); defined as the number of moles of solute divided by liters of solution.

Q:

contact lenses are not permitted in the laboratory 

A:

certain chemical vapors may cause eye irritation when contact lenses are worn 

Q:

never add boiling chips to a hot solution 

A:

adding  boiling chips to a hot solution may cause it to boil over rapidly

Q:

when heating liquids in a test tube , hold the test tube with a test tube clamp at an ___ over the flame .

A:

45 degree angle 

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Q:

never heat a liquid in a test tube with the test tube opened end pointed toward another person.

A:

inhaling the vapors and gases resulting from the heating may affect the person's health

Q:

solvent

A:

The substance which does the dissolving (typically a liquid, such as water or alcohol). Must be greater than 50% of the solution

Q:

solute

A:

The substance which is dissolved, or has gone into solution (typically a solid)

Q:

solution

A:

A  homogeneous mixture of two or more substances. in a solution one pure substance is dissolved in another pure substance homogeneously The individual substances may be present in varying amounts

Q:

report mercury spills from a broken thermometer to the instructor and should be disposed immediately 

A:

because mercury is toxic 

Q:

concentration

A:

The relative amount of solute and solvent in a solution

Q:

never return unused chemical to a reagent bottle

A:

doing so may contaminate the reagent bottle

chemistry practical

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