Grade 7 Science: Metals, Non-Metals, and Metalloids

THE ELEMENTS in the periodic table are cleverly arranged according to their atomic numbers and properties. You will find out that you can predict the properties of an element by looking at its placement in the periodic table.

Metals, metalloids,and non-metals also have their designated places in the periodic table. In this presentation, the arrangement of the elements is discussed as well as the properties of metals, metalloids, and non-metals.

Another activity where students can differentiate metals and non-metals is by doing a litmus paper test of the solution made from ashes of Magnesium and Sulfur. Let them burn a piece of magnesium ribbon and a pinch of sulfur powder separately and and then let them dissolve the ashes in water. A litmus paper test shall spell the difference between a metal and non-metal.

Ariel Lalisan

Ariel Lalisan

Ariel Lalisan is a physics teacher at Alabel National Science High School. He is an advocate of constructivism approach in education. He employs active learning and independent learning in his lessons, and, of course, a lot of technology integration. His goal is to produce students who can solve problems on their own using the concepts they learn in the classroom. Ariel Lalisan is a Google Certified Innovator (Google Teachers Academy Southeast Asia 2014) and a community leader at Google Educator Group Sarangani. He is a co-founder of SoCCSKSarGen and he won the Globe Media Excellence Blogger of the Year Award in 2015.

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