Run the end of a bar magnet through sand samples. Observe sand samples with a magnifying glass. Cleanup Rinse the labtop into a waste container with a stream of water. Filter the particles out using a piece of filter paper in a funnel. The filtrate may be poured down the drain.
Questions Identify the chemical composition of each type of sand or sample.
Red ocean sand contains high iron content which oxidizes to iron oxide, which is red. Black lava sand is black due to the presence of manganese compounds, which are black. What is the chemical component common to the samples which give off gas. Extensions Sand sample from card sandglyph. Examine the sandglyphs with a magnifying lens for evidence of terragenic or biogenic origin.