How many chloride ions are needed to create a neutral compound with a barium ion? A. 2 B. 3
C. 4
D. 1

How does chemistry affect our world? a. chemicals makes our world more polluted. b. chemicals keeps us healthy. c. chemicals can or hurt our world. d. chemicals make our world safe to live in.

How much energy is made when a pice of wood burns. how do you know

In an investigation that uses the scientific method, which step immediately follows making a hypothesis? o summarizing the results o asking a question o making observations designing an experiment mark this and retum save and exit next submit