False. It's Chloride
False - the negative ion is last.
False set is caused by having too much hemihydrate of calcium sulfate. It does not produce much heat. Flash set produces a lot of heat and is caused by a lack of calcium sulfate.
False. If an atom gains or loses electrons, the result is called an ion, not a molecule.
False. A covalent bond is formed by the sharing of valence electrons.
False. Polyatomic ions can carry either charge. For example, consider the sulphate ion - SO42- or the hydroxide ion, OH-. Negative polyatomic ions are, in fact, generally more common than positive ones.
False.
false
False
False
false
False!! is not usually negative.
Any test can be a false negative.
Promethazine (Phenagren) can cause a false negative.
False
false
False
false