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The molecules bond with other molecules or separate from other molecules of other substances, so that substance is now present or isn't present anymore. One example of a chemical change is sodium and chlorine into sodium chloride, or NaCl, or salt. Sodium and Chlorine are both toxic, but combined, they make something really good on fries. :) Chemical changes don't allow the original substances to keep their original properties. Another example is H2O, or water. It's made of two gases but is a liquid because of the chemical change it went through to become water.
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A change in which one or more substances combine or break apart to form new substances?
chemical change
Could the same substance be formed in a chemical change?
No, in a chemical change new substances are formed with different chemical properties compared to the original substances.
Is this statement true or false A chemical change is also called a chemical reaction.?
True. A chemical change refers to a process where substances transform into new substances through a chemical reaction, involving the breaking and forming of bonds. This transformation alters the chemical properties of the original substances.
When substances are mixed it can result in physical or a chemical change true or false?
true
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 or false that indications of a chemical change include light heat and gas production?
True. Light, heat, and gas production are indications of a chemical change. These signs suggest that a chemical reaction is taking place, which involves the formation of new substances with different properties than the original substances.
Is a chemical change also called a chemical reaction?
Chemical changes are most often reffered to as chemical reactions and are represented by chemical equations.
Is it true that if a physical change that occurs when a substance changes composition by forming one or more new substances?
No, that statement is incorrect. A physical change does not involve changing the composition of a substance or forming new substances. It only alters the physical state or appearance of a substance without changing its chemical composition. When a substance changes composition and forms new substances, it is considered a chemical change.
A substance that undergoes a chemical change is still the same substance after the change?
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Is a new substances must form is true about chemical reaction?
Yes, after a chemical reaction new substances are formed.
Is it true during a chemical change the form of a substance is altered but not its identity?
Yes, during a chemical change, the chemical composition of the substance is altered, which means new substances are formed with different properties. However, the identity of the original atoms remains the same, as they are rearranged to form new compounds.
The only true indication of a chemical change is that a?
new substance is formed with different properties than the original substances.
