50 POINTS COME AND GET 'EM please provide full answers. These will not be copy pasted, these answers will instead be used for me to learn. That is how you will get the points.

Locate the main groups of elements in each column on the periodic table, and identify the number of valence electrons there are in each element in a particular group. Infer why some elements are more reactive than others due to their number of valence electrons.

Interpret and describe an example of a chemical formula. Summarize the two parts a chemical formula must have.

Why do atoms bond? Describe examples of the two ways elements complete their valence shell through bonding.

Both acids and bases produce ions when dissolved in water. Propose a way to describe what hydroxide ions (OH−) and H+ (hydrogen) ions are. What do they have to do with acids and bases and the pH scale?

Using what you know about acids, bases and pH, predict what will happen when an acid, such as vinegar, is mixed with water. How would mixing a base, such as baking soda, with water be different?

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gans

explanation:

vestigial organs (like your appendix) are organs that no longer serve a purpose.

so here is the information for current research:

-nrel's geothermal analysts, scientists, and engineers perform a full range of research from developing advanced methods of locating and accessing geothermal resources to exploring innovative technologies to extract and produce clean energy from the heat of the earth

and here is the information for the technology of geothermal energy:

-it's clean and sustainable

-resources of geothermal energy range from the shallow ground to hot water and hot rock found a few miles beneath the earth's surface, and down even deeper to the extremely high temperatures of molten rock called magma

-almost everywhere, the shallow ground or upper 10 feet of the earth's surface maintains a nearly constant temperature between 50° and 60°f (10° and 16°c)

-geothermal heat pumps can tap into this resource to heat and cool buildings

-a geothermal heat pump system consists of a heat pump, an air delivery system (ductwork), and a heat exchanger-a system of pipes buried in the shallow ground near the building

-in the winter, the heat pump removes heat from the heat exchanger and pumps it into the indoor air delivery system

-in the summer, the process is reversed, and the heat pump moves heat from the indoor air into the heat exchanger

-the heat removed from the indoor air during the summer can also be used to provide a free source of hot water