Introducción (2 puntos): Enumere al menos tres medios de análisis cualitativo que se utilizan para identificar metales. ¿Qué les sucede a los electrones cuando se calienta un elemento? Cuál es el significado de "estado excitado" de un átomo. Explique la diferencia visual entre los espectros de emisión y los espectros de absorción. Qué es la onda de longitud y cómo se relaciona con la energía. Referencias (0,5 ptos)

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.

At the current rate, a graph of carbon dioxide produced by fossil fuels over time would slope upward slope downward be horizontal be vertical

What is the chemical formula of magnesium bromide? a. mgbr2 b. mgbr c. mg2br2 d. mg2br