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When an atom gives off energy in the form of light, a. it becomes excited. b. it becomes more stable. c. it returns to ground state. d. both b & c e. none of the above.

Enlista cuatro compuestos del carbono, naturales y sintéticos, de uso en la vida cotidiana.

A car slides on ice and runs into a tree, causing the front of the car to become slightly hotter and crumpled. The car and ice are the system. Describe the energy changes in the system.

Difference between the reaction of metals with acids and reaction between metals and bases

Which contains more molecules; a mole of Chlorine gas (Cl2) or a mole of glucose (C6H1206) ?

The reaction rate between reactants Z and Y is proportional to the cube of [Z]. What is the rate law for this reaction?

A metal surface becomes dull because of continued abrasion. chemical or physical

What types of tissues build the digestive system?

Chemical bonds? A.) Combine compounds to form elements B.) Hold atoms together to form compounds C.) Are always covalent D.) Are always ionic

What is the smalles lt unit of copper that still maintained the characteristics of copper