Explain why the valence electrons are important in determining the chemical properties of an element. They are involved in chemical bonding. They determine the element's color. They determine the atomic mass. They are located in the nucleus.

36. What is the difference between ionic and covalent bonds?(HINT: think electrons) 37. What is the difference between polar and nonpolar covalent bonds? 38. How can you determine if a covalent bond is polar or nonpolar?

Which tests were useful in determining whether or not a compound was ionic or covalent? (Select more than one!) Brittleness D Conductivity Water Solubility Melting Point

Determine if the elements in the following compounds are metals or non-metals Describe the type of bonding that occurs in the compound/ Determine si los elementos en los siguientes compuestos son metales o no metales. Describe el tipo de enlace que ocurre en el compuesto REMEMBER... Ionic Bond Covalent Bond between a Metal and Non-Metal between a Non-Metal and Non-Metal (M+NM) (NM+NM) Compound 1. CO2 Element 1 (metal or non-metal? square Element 2 (metal or non-metal? square Bond Type (Tipo de Enlace) square

19. Complete and balance the following equation, if a reaction occurs: Na_(2)CO_(3)(aq)+HCl(aq)arrow ? Write only the products for the answer. Balance the equation before you plug in the answer. Do not forget to write coefficients for the products. Typearesponse

How is a mixture of carbon and oxygen different from a compound of carbon dioxide? Give examples of a liquid dissolved in a liquid: Gas dissolved in a liquid Solid dissolved in a liquid Is permanent ink soluble in water?Explain.