Which is true of a chemical equation? a. energy must be included in the beginning of the reactionb. subscripts must be used with all products and reactants c. coefficients must be used with all products and reactants d. products and reactants must be balanced

The minerals found in bones are deposited by living cells called

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Which is true of a liquid? it has a definite volume but not a definite mass. it has a definite mass but not a definite volume. it has a definite volume but not a definite shape. it has a definite shape but not a definite volume.