A control group is the group in an experiment that does not receive any sort of change, to then be compared to the other treated objects at the end of the study.
A. True
Because Each element is made up of unique type of atom that has very specific properties
A and C are the correct answers. Because there is no gravity to pull fluids down, they are in your face and hands more than normal. Our bones and muscles become weaker because without gravity objects lack weight.
Filtering would remove the dirt and some particles of dirt from the water, which would make it good to drink.
Answer:
Electronegativity, symbol χ, measures the tendency of an atom to attract a shared pair of electrons (or electron density). An atom's electronegativity is affected by both its atomic number and the distance at which its valence electrons reside from the charged nucleus. The higher the associated electronegativity, the more an atom or a substituent group attracts electrons.
