What is the role of heat in the formation of new rocks? a Heat is used to force or fuse mineral together. b Heat is used to pull the minerals deep into the Earth. c Heat is used to condense minerals into new mixtures. d Heat is used to melt minerals so they can mix together.

Based on the equation and the information in the table, what is the enthalpy of the reaction?

Write the formula for the following chemicals. 7. e. trinitrogen tetraoxide a calcium phosphate f. magnesium acetate b. potassium sulfide g nickel(iii) cyanide c carbon dioxide h. silver sulfate d. cobalt(ii) chloride

Choose an equation that represents an enzyme-catalyzed reaction. (a) enzyme + substrate → enzyme-substrate complex (b) enzyme + substrate ←−→ enzyme + products (c) enzyme + substrate ←−→ enzyme-substrate complex → enzyme + products (d) enzyme + substrate ←−→ enzyme-substrate complex → enzyme-substrate complex + products