The alkali metals in group l of the periodic table all have a single electron in the outermost shell. These metals form covalent bonds with for example the halogens, which have 7 electrons in their outer shell.
When the alkali metal halide, such as KCl is dissolved in water, it dissociates into ions. The K atom loses the single electron, and therefore has a positive charge. In turn, the chloride atom gains the electron and becomes the negatively charged chloride ion.
Answer:EEF1 supports the cell theory because protein synthesis is required for cells to surviveExplanation:The cell theory postulates that the organisms are composed of cells, which represent the basic and functional units of all living forms.
Explanation:
False. The ventricles are the two lower chambers of the heart.
<h3>Structure of the heart</h3>
The human heart consists of 4 chambers, namely:
- The right atrium
- The left atrium
- The right ventricle
- The left ventricle
The two atria are located on the upper part of the heart and are, therefore referred to as the upper chambers of the heart while the two ventricles occupy the lower part are known as the lower chambers of the heart.
More on the structure of the human heart can be found here: brainly.com/question/7980900?referrer=searchResults
The answer is Cold Front: Can being dramatic weather, such as thunderclouds and storms.
All the galaxies appear to be moving away from each other. This proves the universe is expanding which supports the theory of a Big Bang explosion.
