NING FORMATIVE ASSESSMENT AND TRACHER'S REFLECTION1. Formative Assessment1. An unknown white substance iheated andblack solid. What do you think is was waj a mixtureby an elemente a compounddia diatomic moleculeProduced white smoke2. Water is composed of two atoms of tydogs and one atom of oxyaWhich of the following can be the particle model for water?3. What can you say about the movement (speed) of the particles ofliquid, and gas based on this model?Solda) The speed of the particles is the same in all states of mab) Solid particles are the fastest to move compared to liquc) Gas particles are the fastest among solids and liquids.d) The speed of the particles is not affected by temperature
Answer (1)
Answer:1.If an unknown white substance turns into a black solid and produces white smoke when heated, it suggests it might be a compound decomposing into other substances. It is not a mixture or an element but rather a compound breaking down.2.For water (H₂O), the particle model should show two hydrogen atoms bonded to one oxygen atom, forming a V-shaped or bent configuration.3.c) Gas particles are the fastest among solids and liquids.
