Question

classify the figures shown above as depicting a chemical reaction, a physical change, or neither of these. items (9 images) (drag and drop into the appropriate area below)

Explanation:

A chemical reaction involves the breaking and forming of chemical bonds to create new substances. A physical change only alters the physical state or appearance of a substance without changing its chemical composition. Analyze each image based on these definitions. For example, the image with the chemical equation $2H_2O_2(aq)
ightarrow 2H_2O(l)+O_2(g)$ shows a chemical reaction as hydrogen - peroxide decomposes into water and oxygen. The image of water in a beaker is a physical state representation and is a physical change.

Answer:

Without specific labels for each image's classification, here's a general way to think:

• Chemical Reaction: Images with chemical equations like $2H_2O_2(aq)

ightarrow 2H_2O(l)+O_2(g)$ (Image C).

• Physical Change: Images of substances in different physical states like water in a beaker (Image I), dry ice sublimating (Image E).
• Neither: Images of molecular structures without indication of change (Images A, B, D, F, H) are neither chemical reactions nor physical changes in the context of this question as they just represent molecules.