In physical changes, the atoms or molecules that compose the matter do not change their identity, even though the matter may change its appearance.

a. True

b. False

Ca3 (PO4) 2 organic or inorganic

Find density when mass is 4.0g and volume is 5.6L

What's the difference between the bulk properties of a material and the surface properties?

A reagent bottle on the shelf labeled 0.5m nacl was used in place of the 0.5 m cacl2. assuming c2o4^2 - to be in excess, what would be observed as a result of using this wrong reagent in this test? explain

What particle was discovered by Curie?

What evidence of a chemical reaction might you see in dropping an Alka-Seltzer tablet into a glass of water?

State hess's law. how is it used

When the name of a molecule ends in - ose, the molecule is a

How many moles are in. 12 grams of gold.

When lithium reacts with bromine to form the compound LiBr, each lithium atom: (1) gains one electron and becomes a negativelycharged ion (2) gains three electrons and becomes a negativelycharged ion (3) loses one electron and becomes a