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Which of the following happens during a chemical change? Check all of the boxes that apply. One atom or more changes into atoms of another element. New substances with different properties are formed. Solids, liquids, or gases may form. Reaction mixtures always give off some heat. Reaction mixtures always need to be heated.

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Answer:

New substances with different properties are formed.  

Solids, liquids, or gases may form.  

Step-by-step explanation:

A is wrong. Atoms of one element do not change into atoms of another in chemical reactions.

D is wrong. Many reactions spontaneously absorb heat.

E is wrong. Many reaction mixtures are so unstable that they must be cooled to prevent the reaction from going so fast that an explosion might result.

pstnonsonjoku

During a chemical change, new substances with different properties are formed.

There are two types of change that matter can undergo:

  • Physical change
  • Chemical change

When matter undergoes a physical change, no new substance is formed but when matter undergoes a chemical change, a new substance is formed with different properties.

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