Name the element which lies in group IA and 3rd period. What is the valency of it and why?

What are some common disorders associated with the respiratory system

What are the properties of nonmetals? Check all that apply. 1. Nonmetals tend to gain electrons in reactions. 2. Nonmetals are ductile an malleable. 3. Nonmetals have shiny appearance. 4. Nonmetals are poor conductors of heat and electricity. 5.

This is the equation for the formation of magnesium chloride. Mg (s) + 2HCl (l) → MgCl2 (aq) + H2 (g) Which are the reactants and the products in this reaction? A.

How is the hydrosphere and the geosphere alike

At 1.0 atm, terell heats a sample of soild caffeine at 178c the soild converts directly into gas. what is the name of this phase change?

Unlike toads, tortoises A. have jaws and paired appendages. B. have amniotic eggs. C. have true bone. D. have lungs.

Two body systems that are affected by asthma attack

What type of reaction is BaCl2 + Na2SO4 → 2NaCl + BaSO4?

Which type of chemical reaction occurs in Ca + Cl2 - >CaCl2? synthesis combustion single replacement double replacement

What should I do for science fair this year?