When elements combine to form compounds, the physical properties of the compound are the same as those of the elements. True or false? Explain your answer based on your observations.

From which of the following atoms would it be the easiest to remove an electron from? Sr Cd Fb Xe Dalton was absolutely correct in his statement that all atoms of the same element are identical. True False The number of protons is always equal to the number of electrons for any given atom. True False When milk goes "sour", only a physical change has occurred. True False When elements combine to form compounds, those compounds have the properties that are completely different from those of me elements to True False The elements arranged on the modern version of the periodic table in order of increasing mass number True False If a sealed baloon containing 10 grams of liquid water is heated sealed balloon will weigh lessthan the original. True False

Q1 From your observations of the chemical and physical properties of organic and inorganic compounds, complete the following table: Property Elements Bonding Melting point Solubility in water Flammability Organic Compounds Inorganic Compounds 02 A white solid is soluble in water and is not flammable. Would you expect it to be organic or inorganic? Explain your reason. Q3 A clear liquid forms a layer when added to water. Would you expect it to be organic or inorganic? Explain your reason. B. Alkanes B.1 Structures and Names of Alkanes Compound Expanded Structural Condensed Structural Formula Formula 1. Methane 2. Ethane 3. Propane