WorksheetsTHE LABORATORY 3ºESO 'LAERÍA' 20-21
Total questions: 20
Worksheet time: 14mins
Which is the basic gear you must wear in the lab?
Googles
Gloves
Lab coat
Rubber band
The electronic balance is used to measure
Weigh
Mass
Volume
Density
A beaker is used to
Hold liquids
Mix liquids
Measure accurate volumes
Heat liquids
Ring stand and clamp are used to support glass gear in an experiment
True
False
The volume of liquids can be measured using
Pipette
Volumetric cylinder
Beaker
Volumetric flask
Which instruments are better to measure an exact volume of liquid?
Pipette
Beaker
Buret
Erlenmeyer
The best instrument to prepare solutions to an accurate volume is
Beaker
Test tube
Volumetric flask
Funnel
A funnel is used to
Transfer liquids into container with small opening
Measure liquids
Filtrate mixtures
Stir liquids
The best instrument to hold and mix liquids without splashing is
Beaker
Erlenmeyer
Volumetric flask
Test tube
The container to heat chemicals at very high temperatures is called
Crucible
Evaporating dish
Morter
Wire gauze
The tripod and wire gauze are used to
Support containers when need to be washed
Support containers when need to be weighed
Support containers when need to be heated
Which is the name of the instrument we use to heat chemicals al high temperatures?
Heater
Bunsen Burner
Fire supporter
The wash bottle is used to
Rinse small quantities from a beaker
Pour small quantities of water
Wash our hands
The morter and pestle are use to
Heat solids
Grind solids
Crush solids
Mix solids
The glass-watch is used to
Mix solid reactives
Weigh solids on the balance
Watch solids bigger
What is the meaning of this pictogram?
Irritant
Corrosive
Explosive
Toxic
What is the meaning of this pictogram?
Explosive
Irritant
Inflammable
Toxic
What is the meaning of this pictogram?
Toxic
Mortal
Enviromental harmful
Irritant
What is the meaning of this pictogram?
Inflammable
Explosive
Oxidant
Very dangerous
What is the meaning of this pictogram?
Inflammable
Explosive
Oxidant
Toxic
