Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/9

Click to flip

9 Cards in this Set

  • Front
  • Back
  • 3rd side (hint)

Measuring Mass

S.I. unit: kilogram (kg)


Smaller mass: gram (g)


Heavy object in industry:tonne (t)




1kg = 1000g


1tonne = 1000kg




Measurement tool: beam balance or an electronic balance


Electronic balance measure an accuracy up to 0.01g (2 d.c.)

S.I. unit: 3 different unit




Measurement tools: 2 tools

Measuring Time

S.I. unit: second (s).


Other units: minute (min) and hour (h)




1h = 60min


1min = 60s




Measurement tools: stopwatch or stopclock


analogue stopwatch has an accuracy of 0.1s (1 d.p.)


digital stopwatch has an accuracy of 0.01s (2 d.p.)

S.I. unit: 3 different unit




Measurement tools: 2 tools

Measuring temperature

S.I unit: kelvin (k)


Other unit: degree celsius (*C)




K = *C +273




Measurement tools: a mercury thermometer or an alcohol thermometer


Accuracy of theme thermometer is 0.5*C

S.I. unit: 2 different unit




Measurement tools: 2 tools

Measuring Volume

S.I. unit: cubic metre (m*3)


other unit: cubic centimetre (cm*3) and cubic decimetre (dm*3)




1m*3 = 1000dm*3


1dm*3 = 1000cm*3




Measurement tools:




Measuring cylinder :


measures to the nearest 0.5cm*3


e.g. 41.5cm*3 or 99.0cm*3




Burette:


1)accurately measures out the volume of a liquid to the nearest 0.05cm*3


2)scale marked (graduated) in 0.1cm*3 division


3) used to deliver different volumes of liquids


e,g, 24.00cm*3 or 38.95cm *3




pipette:


Accurately measures out fixed volumes of liquids


e.g. 20.0cm*3 or 25.0cm*3



S.I. unit: 3 different unit


Measurement tools: 3 tools

Measure volumes of gases

Measurement tool: gas syringe


The gas syringe measures a maximum volume of 100cm*3

N/A

Methods of collecting gases

1) Displacement of water




2) Downward delivery




3) Upward delivery

3 methods

Displacement of water

Suitable for collection gases that are insoluble in water.


E.g. Carbon dioxide, hydrogen, or oxygen can be collected by this method

Water---> solubility




3 gases that can be collected



Downward delivery

Suitable to collect gases that are soluble in water and must be denser than air


e.g. chlorine ,hydrogen chloride and sulfur dioxide




*the collection of poisonous gases should be carried out in a fume cupboard*

No water---> solubility




downward --> air vs water density




3 gases that can be collected

Upward delivery

Suitable to collect gases that are soluble in water and less dense than air


e.g. Ammonia

No water---> solubility




upward --> air vs water density




1 gases that can be collected