The answer is A. Mixtures can be separated by physical means
A pure substance cannot be separated.
Weight varies dramatically if we leave earths surface.On the moon for example acceleration due to gravity is only 1.67m/s2 A 1.0-kg mass thus has a weight of 9.8 N on Earth and only about 1.7 N on the moon
A. Pyrite is an ore of gold and is used to jewelry making is a false statement
Answer:
water is not a solid and a rock is a solid
Answer. Metals are excellent conductors because the atoms in a metal form a matrix through which their outer electrons can move freely. Instead of orbiting their respective metal atoms, they form a "sea" of electrons that surrounds the positively charged atomic nuclei of the interacting metal ions
