Plasma State
Chemistry ⇒ States of Matter
Plasma State starts at 10 and continues till grade 12.
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See sample questions for grade 11
A scientist observes a glowing gas in a discharge tube that responds to a magnetic field. What state of matter is most likely present?
Describe one way in which plasma is used in the field of medicine.
Describe the process by which a neutral gas is converted into plasma.
Describe the role of plasma in the process of nuclear fusion in stars.
Explain the difference between plasma and gas in terms of electrical conductivity.
Explain why plasma is affected by magnetic and electric fields.
Explain why plasma is considered a distinct state of matter and not just a hot gas.
A scientist observes a glowing gas in a discharge tube that responds to a magnetic field. What state of matter is most likely present?
Which of the following best describes the composition of plasma?
(1) Only neutral atoms
(2) Only positive ions
(3) Positive ions and free electrons
(4) Only molecules
Which of the following best explains why plasma glows?
(1) It reflects sunlight
(2) Electrons recombine with ions, releasing energy as light
(3) It absorbs heat
(4) It is transparent
Which of the following is a man-made source of plasma?
(1) Aurora borealis
(2) Neon sign
(3) Lightning
(4) Solar wind
Which of the following is a property unique to plasma compared to solids, liquids, and gases?
(1) Definite volume
(2) Ability to conduct electricity
(3) Fixed shape
(4) Incompressibility
Fill in the blank: In plasma, the number of positive ions is usually ______ to the number of electrons.
Fill in the blank: The process of removing electrons from atoms to form plasma is called ______.
Fill in the blank: The temperature required to form plasma from a gas is usually ______ than the temperature required to melt a solid.
Plasma is electrically ______ due to the presence of free ions and electrons.
True or False: Plasma can be created at room temperature under certain conditions.
True or False: Plasma can be created by heating a gas to very high temperatures.
True or False: Plasma can be used to sterilize surfaces and medical equipment.
True or False: Plasma can exist at both very high and very low pressures.
