Answer:
C- Choosing variables and controls
Explanation:
Correct on edge.
Its A The paper clip is repelled away from the nail because an electromagnetic field magnetized to the nail
K= 37°C+273.15
K= 310.15
Round to the nearest whole number
310K
For the first one, the correct answer would be "<span>Substance changes its form but not its molecular composition.". During a physical change (let's say cutting paper), the substance has its shape changed, but it is still itself (paper).
</span><span>The second one is a bit trickier: </span>
Kinetic energy of a molecule is directly influenced by temperature. If there is a higher temperature it will have a higher kinetic energy which means the molecule moves at a higher velocity. This will increase the chance of particles bouncing off of each other during the chemical reaction. That explains why the rate of reaction will be higher at a higher temperature, rather than higher at a cool temperature. The correct answer would be lower at 39F.
