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science

chemical and physical changes

QuestionAnswer
what occurs when two or more molecules interact and molecules change into a new substance. chemical reaction
what changes the form or appearance of a substance but does not change the substance into anything new. physical change
when two or more substances join to form new substances with new chemical properties. chemical change
new molecules created in a chemical reaction radiate light differently producing new color. unexpected color change
during chemical bonding energy is released or absorbed making their surroundings hotter or cooler. unexpected temperature change
gorllllllllllll combustion/burning
when a solid suddenly appears in a solution and settles to the bottom or makes the solution cloudy. precipitates forms
when gases produced in a chemical reaction are released. bubbles
Created by: allystudystack
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