While david was riding his bike around the circular cul-de-sac by his house he wondered if the constant circle motion was having any affect on his tires. what would be the best way for david to investigate this?

What are the spectator ions in 2h+ + so42- + ca2+ + 2r → caso4 + 2h+ + 21?

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

Which statement describes james chadwick’s discovery.