What type of molecule or gas are the bubbles that are a product of a positive catalase reaction?

Oxygen

Explanation: Bubbles are oxygen rising to the top.

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.

answermeridional ;