Compounds and Noble Gases

What Determines an element’s chemistry? Valence Electrons – The number of electron’s in an element’s highest electron shell. Helps to determine the chemical properties of an element. Electron Dot Diagrams – Show the number of valence electron’s for an element. Chemical Bond – Force of attraction that holds atoms together. Results from the electron arrangement of two or more elements

On Your Own Read pages 126-127 Complete the Interactive Art and Interpret the Tables Complete the Apply It

Brain Pop Chemical Bonds

Ionic Bonds Ionic Bonds: form when 2 or more elements combine. One elements GAINS electrons One element LOSES electrons Ions are charged atoms because the number of protons is not equal to the number of electrons. Positively Charged Ions – have more Protons than Electrons (Sodium) Negatively Charged Ions – have more Electrons than Protons (Chlorine)

On Your Own Read pages 132-133 Complete the Infer on page 132 Do the Lab Zone Diagram on page 133

Brain Pop Ions

Covalent Bonds Form when 2 or more elements SHARE electrons Usually form between nonmetal atoms Atoms charge remains neutral

Compare and contrast Alike: Ionic Bonds Covalent Bonds Electrons   Ionic Bonds Covalent Bonds Electrons Change in atom(s) charge Example Something that it’s like

Noble gases Group 18 on the Periodic Table Are “Happy” atoms so they do not bond with other atoms Outer shell is full