The chemical elements are divided into two broad groups, the metals and the non-metals. In this experiment, you will examine some members of the metal group and identify similarities and differences in their physical and chemical properties. Metals are the elements that are found in the left of the periodic table with high electrical and thermal conductivity. Metals lose electrons to create positive ion charges. Metals have a unique shine, are prone to forming, have a high tendency to form cations, and combine with oxygen to give mostly basic oxides. This experiment investigated the properties of metals by seeing the reactivity of metals. The metals used in this experiment were lithium, sodium, potassium, magnesium, and calcium. What was the first chemical change observed in the lab? Explain. In this experiment, lithium was the first element used, and the first chemical change that was noticed was the …show more content…
We know this because there are bubbles, and the metal gets smaller as it dissolves in water because any alkali metal that reacts with water produces hydrogen gas. The lithium was consumed over the course of the reaction, yielding lithium hydroxide, which eventually dissolved in water to produce hydrogen gas. Write a word equation for the reaction of ONE of the metals with water. Na ( s ) + H 2 O ( l ) → NaOH ( aq ) + H 2 ( g ) Is the remaining liquid in the reaction acidic or basic? How do you know? The remaining liquid in the reaction is base because Sodium hydroxide (NaOH), the product of the reaction, is a powerful base. Also, water is neutral so with the metal it turns into a basic liquid. According to your observations, group these metals into two groups and rank the metals from least to most reactive. Use Lewis Dot Diagrams to represent the metals. According to your observations, group these metals into two groups and rank the metals from least to most reactive. Use Lewis Dot Diagrams to represent the