Which of the following happens during an endothermic chemical change? Heat is absorbed.
Heat is released.
Net energy decreases.
Net energy remains constant.

Which of the following true? a_volcanoes and earthquakes often near the plate boundaries. b_volcanoes occur whereve there are tall mountains. c_earthquakes cause volcanoes in the same location to erupt violently d_volcanoes and earthquakes occur only where plates are colliding with each other

List four observations that indicate that a chemical reaction may be taking place

Which compound contain an iron with a 3+ charge