Explain how human chromosome 13 can be composed of just two molecules but have so many atoms.

Construct an explanation of how sodium and chlorine combine to form sodium chloride. A) Chlorine metal loses a valence electron to become a cation and nonmetal sodium gains a valence electron to become an anion.

The correct name for the ion Fe2 + is

When aluminum is placed in concentrated hydrochloric acid hydrogen gas is produced. what mass?

Patti used a steel wrench to work on her bicycle on a hot, sunny day. She left the wrench on the hot concrete surface for an hour while she had lunch. When she returned, the wrench was very hot to touch.

Assessment 4. Element X is a metal that reacts to form XCI. It has the smallest metallic radius of its group. What is element X?

A chemical is placed in a beaker containing 20 g of soil and 500 mL of water. At equilibrium, the chemical is found in the soil ast a concentration of 100 mg. kg-1 of soil.

A solid reactant is placed into a beaker of warm water. The liquid vigorously bubbles as the soild dissolves into the solution. What will most likely happen if the temperature of the liquid is slightly reduced

How does the space between atoms change as agas goes through prase changes to become a soild? how. do they different? use words to describe

What is an endothermic reaction? O A. A reaction that produces heat O B. A reaction that uses radiation waves C. A reaction that absorbs heat O D. A reaction that contains enthalpy

How does the conservation of matter relate to balancing equations?