Which statement is true of an alpha particle? A. It is a particle that travels at the speed of light.
B. It is an electron.
C. It is the largest decay particle.
O
D. It is electromagnetic radiation, not a true particle.

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance

all eukaryotic cell have mitochondria : )