Answer:
Alkali metal hydroxides can be used to test the identity of metals in certain salts. The colour of the precipitate will help identify the metal : Calcium hydroxide is soluble; no precipitate is formed.
The properties of a mineral depend on the kind of atoms of mineral being examined
Answer:
A. Engineers come up with scientific questions when they are developing their design, and scientists do research to answer them.
Coffee is a mixture because it is a mixture of many compounds
C is correct. right now gravity holds the atmosphere so if there is no gravity then no atmospher
