Ayuda con la tarea de química
El solucionador de problemas de química de QuetionAI es una herramienta de tutoría de química para escuelas secundarias que puede resumir reacciones y ecuaciones químicas clave para los usuarios en tiempo real y tiene un potente sistema de aprendizaje para que incluso los estudiantes con una base débil puedan dominar la química fácilmente..
Ya no tendrás que preocuparte por las propiedades elementales de la tabla periódica. Aquí podrás acceder fácilmente a las reacciones químicas y principios de reacción correspondientes a cada elemento. Deducir la estructura original de moléculas y átomos a partir de los fenómenos macroscópicos que se pueden observar es una técnica de investigación química que siempre hemos defendido.
- Part 2 Which e experiment provides the strongest evidence that a new substance is formed? Din) Experiment 1, because the magnesium disappears, and bubbles form. Do Experiment 4, because the fizzing and bubbling show gas production, which is a sign of a new substance forming. Experiment 2, because the nail changes shape but remains the same substance. Din) Experiment 3, because the ice melts into water.
- 4 Which experiment does not provide evidence of a chemical reaction? Experiment 1, because gas formation is a sign of a chemical reaction. Experiment 4, because bubbling is caused by air escaping from the mixture. Experiment 3, because melting is a physical change not a chemical reaction. Experiment 2, because the formation of rust is a sign of oxidation.
- Di) 11. The rate of dissolving can increase or decrease depending on a variety of factors. How does each of these factors affect the rate of dissolving? Enter the correct answer in each box to complete the statements. Raising the temperature of the solvent can square the rate of dissolving.whereas slowing the speed of stirring can square the rate of dissolving.
- Din) 10. Which term best describes a solution that has a large amount of solute dissolved in the solvent? unsaturated solubility concentrated dilute
- (}_{19)^42Karrow _(-1)^0e+_(20)^42Ca What type of reaction is this? gamma quiet beta alpha
