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Chemistry sec 3 EOY > Chap 1: Experimental Chemistry > Flashcards

Chap 1: Experimental Chemistry Flashcards

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1
Q

What measures time?

A

Digital Stopwatch & Analogue stopwatch

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2
Q

Accuracy of a digital stopwatch

A

0.01s

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3
Q

Convert 1 Kelvin to degree Celsius

A

-273 degree Celsius

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4
Q

What measures length

A

metre ruler and measuring tape

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5
Q

1m can be converted to________

A

10dm, 100cm, 1000mm

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6
Q

1 tonne is _____kg

A

1000kg

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7
Q

what measures mass

A

electronic balance & beam balance

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8
Q

what measures volume

A

pipette, volumetric flask, measuring cylinder, burette

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9
Q

1m^3 is _________cm^3

A

1 000 000cm^3

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10
Q

pipette measurement

A

fixed volumes of 10.0cm^3 or 25.0cm^3

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11
Q

volumetric flask measurement

A

fixed volumes larger than 100cm^3 or 250cm^3

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12
Q

measuring cylinder measurement

A

range of volumes to the nearest 0.5cm^3

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13
Q

burette measurement

A

range of volumes to nearest 0.05cm^3

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14
Q

Parallax error occurs when ____________

A

eye is not position directly at the meniscus

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15
Q

what measures volume of gases

A

gas syringe(up to 100cm^3)

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16
Q

Methods to collect gases

A

water displacement, upward delivery, downwards delivery

17
Q

gases suitable for water displacement

A

insoluble in water, density does not affect gas collection

18
Q

gases suitable for downward delivery

A

soluble/insoluble doesn’t matter, denser than air

19
Q

gases suitable for upwards delivery

A

soluble/insoluble doesn’t matter, less density than air

20
Q

Methods to dry gases

A

concentrated sulfuric acid, quicklime(calcium oxide), fused calcium chloride

21
Q

Gases suitable for concentrated sulfuric acid

A

gases that are unreactive to sulfuric acid

22
Q

gases suitable for quicklime

A

gases must react with calcium oxide

23
Q
A
23
Q

gases suitable for calcium chloride

A

gases must not react with calcium chloride

24
Q

magnetic attraction

A

Chemistry sec 3 EOY (1 decks)

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