Relating cause and effect. A chemistry student decided to weigh a bag of microwave popcorn before and after popping it. She opened the bag after microwaving it to let steam escape and then weighed it again. She noticed that the mass of the unpopped popcorn was 0.5g more than the mass of the popped popcorn. Was the matter destroyed when the popcorn popped? Explain your answer.

Design techniques and materials that reduce the negative environmental impact of a structure are referred to as

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.