science test study cards Flashcards
to be able to not get many too none wrong
What is the primary function of a chemist microscope?
To magnify small objects for detailed observation.
True or False: A chemist microscope can only be used for biological samples.
False
Fill in the blank: The __________ is the part of the microscope that holds the objective lenses.
revolving nosepiece
What type of lenses are primarily used in a chemist microscope?
Convex lenses
Which part of the microscope controls the amount of light that reaches the specimen?
Iris diaphragm
What is the purpose of the stage on a chemist microscope?
To hold the slide in place for observation.
Multiple Choice: What is the highest magnification typically available on a standard chemist microscope?
A) 10x
B) 40x
C) 1000x
D) 2000x
C) 1000x
What is the difference between the objective lens and the eyepiece lens?
The objective lens is closer to the specimen, while the eyepiece lens is what the viewer looks through.
True or False: The chemist microscope can be used to study both solid and liquid samples.
True
What is the purpose of the coarse focus knob?
To make large adjustments to the focus of the microscope.
Fill in the blank: The __________ provides stability and support for the microscope.
base
What is the role of the condenser in a chemist microscope?
To focus light onto the specimen.
Multiple Choice: Which part of the microscope is used to change the objective lenses?
A) Stage
B) Arm
C) Revolving nosepiece
D) Base
C) Revolving nosepiece
What is the typical range of magnification for the objective lenses found on a chemist microscope?
4x to 100x
True or False: A chemist microscope can only be used in a laboratory setting.
False
What is the purpose of the fine focus knob?
To make small adjustments to the focus of the microscope.
Fill in the blank: The __________ is the part of the microscope where the specimen slide is placed.
stage
What type of illumination is commonly used in chemist microscopes?
LED or halogen light
Multiple Choice: Which of the following is NOT a component of a chemist microscope?
A) Objective lens
B) Condenser
C) Spectrophotometer
D) Eyepiece
C) Spectrophotometer
What is the typical resolution limit of a chemist microscope?
Approximately 200 nanometers
True or False: The chemist microscope can be used for both qualitative and quantitative analysis.
True
What is the function of the eyepiece lens?
To magnify the image created by the objective lens for viewing.
Fill in the blank: The __________ helps to adjust the brightness of the light source.
light intensity knob
What should be done before using a chemist microscope?
Ensure that the lenses are clean and the light source is functioning.
Multiple Choice: What is the primary reason for using immersion oil with a microscope?
A) To increase contrast
B) To enhance magnification
C) To prevent lens fogging
D) To improve resolution
D) To improve resolution
