Cards in this guide (12)
The correct method of removing a glass stopper is to grasp it
between the secon and third finger
Which of these items should be used to heat a solid in the presence of air
a crucible with the lid slightly ajar
The most important part of heating fluid in a test tube is to
maintain a consistent temperature thoughout
Heating the liquid in a test tube
it vapourise from the test tube
When reading the volume of fluid in a graduated cylinder the eye should be
Level with the bottom of the fluid's meniscus
A space probe has returned samples to earth of crystals found on a distant planet In studying these crystals scientist discovered that a 0994g sample will absorb 2027 J heat when the temperature
How many significant digits are in the number 85000
Which of these measurements has 2 significant digits 50.4 g
50.4 has three significant digits.
How many significant digits are in this number 60076
How many significant digits are in 1.076000
This number has seven significant digits.
How many significant digits in the number 456
The main reason for learning to correctly pour fluids in a laboratory is to conserve costly chemicals true or fasle