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When bonds break and new bonds form a _______________ change occurs
a physical property can be observed without changing the substance
cutting paper
chemical
physical
exothermic
precipitate
a change in mass of a substance
endothermic
A solid that forms from solutions during chemical reactions is called a
a physical property can be observed without changing the substance
cutting paper
chemical
physical
exothermic
precipitate
a change in mass of a substance
endothermic
During a chemical reaction the surrounding temperature increases. What kind of reaction was it?
a physical property can be observed without changing the substance
cutting paper
chemical
physical
exothermic
precipitate
a change in mass of a substance
endothermic
What kind of reaction usually occurs when food is cooked (energy is put in)?
a physical property can be observed without changing the substance
cutting paper
chemical
physical
exothermic
precipitate
a change in mass of a substance
endothermic
braiding hair is a change in the appearance of the hair so it is a ___________________ change
a physical property can be observed without changing the substance
cutting paper
chemical
physical
exothermic
precipitate
a change in mass of a substance
endothermic
Which of the following is not an example of chemical change?
a physical property can be observed without changing the substance
cutting paper
chemical
physical
exothermic
precipitate
a change in mass of a substance
endothermic
Which of the following is not an indication of a chemical change?
a physical property can be observed without changing the substance
cutting paper
chemical
physical
exothermic
precipitate
a change in mass of a substance
endothermic
What is the difference between a physical property and a chemical property?
a physical property can be observed without changing the substance
cutting paper
chemical
physical
exothermic
precipitate
a change in mass of a substance
endothermic
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