Unit Test — Cumulative exam Answers

Which best explains why a firework being ignited is an example of an exothermic reaction and not an endothermic reaction?

synthesispolymerizationdecompositionoxidationreplacement

A Venn diagram is used to compare and contrast different topics. The items that are unique to each topic are represented in the separate sections of the circles, and the items that are common to both topics are represented in the center overlapping sections. Harlow creates this Venn diagram comparing and contrasting endothermic and exothermic processes.

Rosa was looking for patterns to help predict the products of chemical reactions. She recorded three similar decomposition reactions in the table.What products should she record in the last row of the table?

Substances A and B react in a ratio of A + B → AB. Colin was combining substance A and substance B to form substance AB. He added 10 g of substance A and 45 g of substance B.