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What is the True indication of a chemical change?
A change in color
The only true indication of a chemical change is that a?
new substance is formed with different properties than the original substances.
Chemical properties observed only when a substance undergoes a chemical change a true bfalse?
True. Chemical properties are characteristics that can only be observed when a substance undergoes a chemical change, such as reactivity with other substances or the ability to undergo a chemical reaction.
Is it true only chemical changes involve a change in appearance?
yes
Is it true or false for A Change In State Is A Physical Change?
True. A change in state, such as from solid to liquid or gas, is a physical change because the substance's chemical composition remains the same and only its physical properties, like shape or state, change.
Is it true that a physical change and a chemical are exactly alike?
Not true, they are not similar; a chemical change is a change in the molecule, the physical change is not.
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.
A change in which one or more substances combine or break apart to form new substances?
chemical change
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.
In examples of chemical changes the odor of sour milk indicates a chemical change has taken place true or false?
True. The souring of milk is a chemical change caused by the breakdown of lactose sugars into lactic acid by bacteria. The change in odor is a result of this chemical reaction.
Is it true that a chemical change is also called a chemical reaction?
Yes
Does physical and mechanical change the same as physical and chemical change?
no its not true
