Lesson
Lesson-3.1.8- Describe the differences between elements, mixtures and compounds, and between metals and non-metals ??? Describe an alloy, such as brass, as a mixture of a metal with other elements.
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Lesson-3.1.9- Describe the formation of ions by electron loss or gain ??? Describe the formation of ionic bonds between elements from Groups I and VII.PreviousLesson-3.1.7- Describe the build-up of electrons in ???shells??? and understand the significance of the noble gas electronic structures and of the outer shell electrons. (The ideas of the distribution of electrons in s and p orbitals and in d block elements are not required.)Next