Afriend is trying to describe a material to you. which of the following is not a description of a physical property of the substance? a. it is red in color. b. it is magnetic. c. when combined with water, it fizzes. d. it melts at 240°c.

Which statement describes the appearance of a temperature-vs.-time graph? a horizontal line shows that the temperature increases at a constant rate over time. a vertical line shows that the temperature decreases at a constant rate over time. horizontal lines where the temperature is constant during phase changes connect upward-sloping lines where the temperature increases. horizontal lines where the temperature increases are connected by upward-sloping lines where the temperature is constant for each phase.

When you perform this reaction, what could remain at the end of the reaction? check all that apply. excess reactant aqueous copper chloride excess reactant aluminum oxygen product solid copper carbon dioxide product aqueous aluminum chloride water

Electrons are extremely important to what area of technology? a) anti-aging research b) household product development c) electronics d) drug discovery