Answer:
Dana filtered the sample and larger granules of the sample were left behind.
Explanation:
If a substance is pure, it will have a uniform composition throughout. It will not separate into particles of various sizes.
One of the characteristics of pure substances is that they are homogeneous. A mixture is definitely made up of particles of various sizes.
Since the particles was filtered and larger granules were left behind, the sample has been separated by a physical method (filtration). Only a mixture can be separated by physical methods. It is not a pure substance.
207 is the mass number. 82 would be the atomic number
Answer:
below :)
Explanation:
Bones, droppings, and other dead matter
Energy storage molecules, cellular respiration
Process, energy
Oxygen, energy storage molecules, energy, carbon dioxide
Cellular respiration, carbon
Carbon, nitrogen
Nitrogen
Decomposers, ecosystem
Answer:
A. It is the work done when a force of 1 newton is applied to an object for a distance of 1 meter
Explanation:
Explanation:
1) their is no formation of new substance
2) the reaction can be reverse i.e if we heat sugar solution it we give us sugar and water.
