the hollow block is a chemical change
No, hollow block is not a physical change. A physical change refers to changes in the state or appearance of a substance without altering its chemical composition. However, hollow block is a building material made from a mixture of cement, sand, and other aggregates, which undergoes a chemical change (hydration) during the curing process.
Physical, because each slice of pellet is still the same chemically: you have merely divided your one sodium block into two blocks of sodium. If it were chemical, some kind of notable chemical difference would have occurred (you would no longer have sodium, but something else).
Yes. The wire and the block are still composed of the same material - only the shape has changed.
Tearing a piece of paper in half means a physical change because nothing happens to the paper, it's still paper although, if you set it on fire, that would be a chemical change because it is now changed into a different element. hope this helps d^^b
This chemical is an enzyme inhibitor.
No, hollow block is not a physical change. A physical change refers to changes in the state or appearance of a substance without altering its chemical composition. However, hollow block is a building material made from a mixture of cement, sand, and other aggregates, which undergoes a chemical change (hydration) during the curing process.
It is a physical change: change of state of matter from solid to liquid.
Yes, the process of a block of ice changing from a solid to a liquid is a physical change because the chemical composition of water remains the same during this transition. The change in state from solid to liquid is reversible.
Physical, because each slice of pellet is still the same chemically: you have merely divided your one sodium block into two blocks of sodium. If it were chemical, some kind of notable chemical difference would have occurred (you would no longer have sodium, but something else).
physical
physical
As a basic example: When a block of ice melts into water, the change is physical (solid to liquid) yet the chemical contents of the ice/water remains unchanged. If a lot of salt is then dissolved in the melted water, it is still water, yet it has changed chemically into a saline (salty) solution. The added salt will increase the water's density - which could be a physical change!
in changes. Physical changes can be reversed. E.g. if you were to melt a block of ice, and then freeze it again, it would to some degree be reversed. This is a physical change. However, if you were to burn a peace of toast, the change would be chemical. Once the toast is burnt you cant get it back.
1.5kg
The answer depends on how much of the block is hollow.
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That depends if hollow point or jacketed and what size engine block.That depends if hollow point or jacketed and what size engine block.