Mr. kawicki is teaching his sixth-grade science students about the scientific method. students are instructed about each component of the method first in order to understand the whole process. this instructional strategy is based on what concept?

This instructional strategy is based on bottom-up approach.

Explanation:

In this case, before teaching an experiment, the students are being trained about the components used in those experiments. This method of teaching will help students to learn the basic concepts and mechanisms of that experiment easily.

As they are learning about the components used in those experiments first, they can easily understand where is the problem occurring in case of any error. So, this type of approach of learning is termed as a bottom-up approach. Because the students are learning from the starting that is bottom and then they are making it as a whole experiment which is the up mechanism.

alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.

alkali metals have electronegativity from 0.7 to 1, lowest in periodic table of elements, which means that alkali metals (i group in periodic table) has positive oxidation number in compounds.

electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

alkaline metals (far left in main group) have lowest ionizations energy and easy remove valence electrons,

for example, potassium is the alkali metal and has a single valence electron in the outer electron shell.

electron configuration of potassium is: ₁₉k 1s²2s²2p⁶3s²3p⁶4s¹.

they can not exist alone in nature, because they are very reactive.