Classify the following by the sign of ΔE for the system.
Drag the appropriate items to their respective bins. If no definitive classification can be made, drag the item into the bin labeled "Not enough data."
Energy cannot be created nor destroyed, but it can be transferred between a system and its surroundings. The change in internal energy, ΔE, is positive if the system absorbs energy, and it is negative if the system releases energy. The total change in internal energy is the sum of the heat, q, and work, w: ΔE = q + w.
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