Slide 1 Slide 2 Which sample of matter is classified as a pure substance? (A) Air(B) milk (C) ammonia (D) seawater Air = homogeneous mixture of oxygen(~80%) and nitrogen…

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PowerPoint Presentation South Africa Country of My People Nkosazana Roxi Kleinhaus Basic Facts for Gr 4 â Gr 6 learners Learning about our National Identity We are all familiar…

Which sample of matter is classified as a pure substance? (A) Air (B) milk (C) ammonia (D) seawater Air = homogeneous mixture of oxygen(~80%) and nitrogen (~20%) Ammonia…