Which statement about plasma is true?
A) It contains free electrons.
B) It is an electrically neutral gas.
C) It contains diatomic gas molecules.
D) It can freeze. It is found only in space.
The answer is A! Plasma, being one of the four states of matter, contains free electrons. D is wrong, because it is the most abundant state of matter found in the universe. B is incorrect because it is composed of ionized molecules.
Plasma is referred to as the fourth state of matter. Adding to the other three states of matter, gases, liquids and solids.
It is a state of matter that is similar to gas, however the atomic particles are charged rather than being neutral like in the case of gaseous particles.
Plasma is a hot has that has been ionized consisting of equal numbers of positively charged ions and negatively charged electrons. thus, we can say they are made up of electrically charged particles and are strongly influenced by magnetic and electric fields unlike normal gases.
Since the positively charged ions are equal to negatively charged electrons we can also say plasma is electrically neutral.
