• Based on your observations, answer the following questions:a. What changes did you observe in the nails during the activity?b. Can you describe the differences between the nail that underwent a physicalchange and the one that underwent a chemical change?c. How did the appearance of the nails change after each part of the activity?d. Why do you think it's important to understand the differences between physicaland chemical changes?e. What harmful effects did we discuss regarding physical changes, such asscratching the nail?f. What harmful effects did we observe regarding chemical changes, such as rustingin vinegar?
Answer (1)
This looks like a science question about physical and chemical changes! Here's how you can answer it: Understanding Physical and Chemical Changes - Physical Change: A change in the appearance or form of a substance, but not its chemical composition. The substance remains the same. Examples:- Melting ice (water changes from solid to liquid)- Cutting paper (changes shape but is still paper)- Chemical Change: A change where a new substance is formed with different properties. The original substance is transformed. Examples:- Burning wood (ash and smoke are formed)- Rusting iron (iron reacts with oxygen to form iron oxide) Answering the Questions - a. What changes did you observe in the nails during the activity?- Describe any changes in the appearance of the nails (color, texture, shape). Were they bent, scratched, or did they change color?- b. Can you describe the differences between the nail that underwent a physical change and the one that underwent a chemical change?- Focus on the nail that rusted (chemical change) and the nail that was simply bent or scratched (physical change). How did their properties differ?- c. How did the appearance of the nails change after each part of the activity?- Describe how the nails looked after each step of the experiment. Did they change color, texture, or shape?- d. Why do you think it's important to understand the differences between physical and chemical changes?- Explain why it's important to know if a change is physical or chemical. For example, it helps us understand how materials react and how to predict the outcomes of reactions.- e. What harmful effects did we discuss regarding physical changes, such as scratching the nail?- Think about the potential dangers of scratching a nail. Could it cause injury or damage to the nail?- f. What harmful effects did we observe regarding chemical changes, such as rusting in vinegar?- Describe the effects of rusting. Is rust harmful to the nail? Could it weaken the nail or make it unusable? Remember to use your observations from the experiment to answer these questions in detail!
