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Compare the food energy in calories from burning the chip and the saltine. How can you explain this differences in terms of chemical composition?
Wiki User
∙ 8y ago
The chip has more food energy in calories than the saltine because it contains more fat, which has a higher energy content per gram compared to carbohydrates (found in saltines). Fats contain 9 calories per gram while carbohydrates contain 4 calories per gram, explaining the difference in food energy content between the two snacks.
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How do the properties of substances formed in chemical changes compare to those of the original substances?
Substances formed in chemical changes have different physical and chemical properties compared to the original substances. This can include changes in color, odor, state of matter, melting/boiling points, and reactivity. The chemical composition of the new substances is also different from the original substances.
What are some ways you can compare and contrast substances?
You can compare and contrast substances based on their physical properties (such as color, density, melting point) or chemical properties (such as reactivity, flammability). Analyzing their composition, structure, and behavior under different conditions can also help identify similarities and differences between substances. Additionally, conducting tests like spectroscopy, chromatography, and microscopy can provide valuable information for comparison.
How do properties of new substances compare with properties of old substances?
The properties of new substances can vary depending on their chemical composition, structure, and interactions. They may have similarities to old substances, but can also exhibit unique characteristics due to different bonding arrangements or functional groups. Testing and analysis are typically required to determine how the properties of new substances compare to those of old substances.
How would you compare physical and chemical properties and physical and chemical changes?
Physical properties are characteristics that can be observed or measured without changing the substance's identity, such as color or density. Chemical properties describe how a substance interacts with other substances, like its ability to rust or burn. Physical changes alter a substance's appearance or state without changing its chemical composition, while chemical changes result in the formation of new substances with different chemical properties.
Compare and contrast a physical property and a chemical property?
Physical properties can be observed or measured without changing the substance's chemical composition, such as color, density, or melting point. Chemical properties describe how a substance reacts or changes into a different substance, like flammability, reactivity, or pH. In summary, physical properties describe how a substance looks or behaves under certain conditions, while chemical properties describe how a substance interacts with other substances to form new substances.
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