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Is changing the size and shape of pieces of wood a chemical change true or false?
Wiki User
∙ 11y ago
False. Changing the size and shape of pieces of wood is a physical change because the wood's composition does not change.
Wiki User
∙ 11y ago
Anonymous
false
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How Chemical equations are balanced by changing the subscripts of the molecule true or false?
False. They are balanced by changing the coefficients.
Changing water to ice is an example of a chemical change true or false?
I'd say no. Melting just changes the physical properties. Example: A rubber ball. If you melt a rubber ball it will still be rubber, just in a different form.
Is a tree that is cut into boards at a sawmill a chemical change?
Sawing a board in half is not an example of chemical change. It is an example of a physical change. Physical changes on a substance do not change the substance. When you saw a board in half, the two halves of the boards are still boards- they're not anything else.
The chemical properties of the aluminum change as you cut the can?
FALSE
When water changes to steam it undergoes a chemical change true or false?
No. It is still water. So that makes it a physical change.
Is changing thesize and shape of pieces of wood a chemical change true or false?
false
How Chemical equations are balanced by changing the subscripts of the molecule true or false?
False. They are balanced by changing the coefficients.
Changing water to ice is an example of a chemical change true or false?
I'd say no. Melting just changes the physical properties. Example: A rubber ball. If you melt a rubber ball it will still be rubber, just in a different form.
Changing subscripts is one of the steps of balancing a chemical equation.?
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Is a tree that is cut into boards at a sawmill a chemical change?
Sawing a board in half is not an example of chemical change. It is an example of a physical change. Physical changes on a substance do not change the substance. When you saw a board in half, the two halves of the boards are still boards- they're not anything else.
Is this true or false in a chemical change other forms of energy cannot be changed to chemical energy?
False
When you hit a piece of graphite and break it into small pieces you have broken chemical bonds?
This is FALSE ! Because you only broke it in pieces and tearing or breaking into pieces is a PHYSICAL CHANGE not a chemical change. ---------------------------- I also consider that breaking graphite is only a physical change. - - - - --------------------- It's true, you break chemical bonds when you break pieces of graphite. Graphite is a macromolecule: it is found in sheets, and within the sheets each carbon atom is bonded to four other carbon atoms. The only way you could possibly get it apart is to break the bonds between atoms.
Dissolved salt in ocean water is an example of a chemical change true or false?
false
During a chemical change the form of a substance is altered but not its identity true or false?
The statement is false: A chemical change of a substance is defined as a change in which the substance is not the same substance after the change as it was before.
The chemical properties of the aluminum change as you cut the can?
FALSE
True or false .During a chemical change atoms are lost or gained to the new substance?
False
A chemical reaction causes a chemical change true or false?
It is true that a chemical reaction causes a chemical change. An example of this can be seen by adding baking soda to vinegar.
