Identify the purpose of the statements below according to the following categories: explanation, classification, enumeration, or time order. 11. Sand, soil and flour are insoluble materials. 12. Salt and sugar are soluble materials because they dissolve completely in water. 13. Rocks, soil and wood are solids. Vinegar, oil and soy sauce are liquids. Wind, smoke and oxygen are gases. 14.COVID-19 was first identified as novel coronavirus of pneumonia in Wuhan, China in December 2019. This unseen enemy had started to spread in the different parts of the globe in March 2020, declaring it as pandemic by the World Health Organization (WHO). As of December 2020, approximately 1.74 million people have died from its outbreak. 15. Social distancing, wearing of face mask and community quarantine are the precautionary measures that we should follow to prevent the spread of Covid-19.​