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How many years would it take half of the rubidium-87 atoms in piece of rock to change into strontium-87?
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Does the area of a piece of paper change if you change the height and radius?
Yes.
Is molding a piece of silver a physical change?
Molding a piece of silver using heat is a physical change. This is because it is changing shape and not chemically changing the silver.
When you use a hammer to drive a nail into a piece of wood are you changing the size or the direction of the force?
change the direction of force,because it exerted the force on it.
What is the mass of a piece of copper that undergoes a 25 degrees C temp change with the loss of 428 J of energy?
q = mass * specific heat * change in temperature 428 joules = (mass)(0.385 J/gC)(25o C) = 44 grams copper ============
What is a piece of caca?
Its a piece of crap, feces, or poop in yitish. And it smells out of this world!A.K.A. piece of feces.
Why is magnitizing a piece of steel a physical change?
Cause you're changing the direction of the atoms when you magnetize it.
Are the atoms in a piece of iron different from the atoms in a piece of tin?
Yes. Their atomic mass is different, among other things.
What are the signs of physical change and chemical change?
Physical Change: A change in which the atoms or molecules in a substance stay the same. Example: Ripping a piece of paper in half Chemical Change: A change that affects the type of molecules or atoms in a substance. Example: Burning wood The primary difference is that in a physical change, the composition of the substance remains the same, but in a chemical change, the composition of the substance changes.
What is the smallest piece of matter discovered?
Atoms
What happens during physical changes?
The transformation of a liquid to a gas.
How many atoms are there in a cupcake pie?
There are millions of atoms in a cupcake pie. If you made a dot with a pencil on a piece of paper, there could be over a hundered atoms.
Is wadding a sheet of paper a chemical change?
Physical change. The paper is still a piece of paper; nothing happened to the chemical composition of it.
How is an unmagnetized piece of iron different from the same piece of iron when it is magnetized?
An unmagnetized piece of iron has its atoms pointing in different directions, and opposing each other. When the iron is magnetized, the atoms are mostly pointing in the same direction, and the fields add together.
Is folding a piece of paper a chemical change?
no it is not a physical change because folding a piece of paper does not chemicaly change it.
tearing a piece of paper in half physical or chemical change?
Physical change
How the arrangement of the atoms and molecules in a sugar crystal differ from those in a piece of plastic?
the atoms dissolve with the atoms and the molecules to lock the sugar and salt / lock in to make the crystals
What is an example of an chemical change?
Chemical reactions also known as chemical change occurs when new products are produced due to the reorganization of atoms. The best example for this process is the change from raw food to cooked food.
