Which element requires the least amount of energy to remove an electron from the outermost energy level? A. Na B. He C. F D. Mg

Drag each label to the correct location on the chart. classify each reaction as endothermic or exothermic.

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

After watching the video "zinc strip in copper nitrate solution", and reading the instructions, click on the link labeled "start" just below the drawing of the pencil tip. follow the direction to complete the 3x3 grid. answer the below questions for the portion of the activity in which sn(s) is placed in agno3(aq)