Bryan is doing a chemistry lab and needs to measure exactly 3.5000 mL of water. How many significant digits are in this measurement? 1
2
3
5

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.

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true

Avariable that is not being directly tested during an experiment should be