Biology, 29.10.2020 19:20 aaron0828

Plss help Due today! Answer all plss!
What is density?

Why is ice less dense than liquid water?

Why is it important to ecosystems that ice floats in liquid water?

Why is water considered to be a universal solvent?

What is being measured in pH?

What is the range of the pH scale?

What is the pH of water?

What types of substance have pH values less than 7?

What types of substance have pH values greater than 7?

Give an example of a substance with a high concentration of H+ ions.

Give an example of a substance with a low concentration of H+ ions.

What is specific heat?

Does water have a high specific heat? What does this mean?

In the specific heat example, which liquid has the highest specific heat? (Remember that the more heat it takes to make the liquid raise 1 degree in temperature, the higher the specific heat it has.)

What is heat of vaporization?

Does water have a high heat of vaporization?

Define vaporize.

 

Why does water have a high boiling point?

 

Answers: 2

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Answer from: Cosio

Explanation:

Why is ice less dense than liquid water?

hydrogen bonds causes molecules to push farther apart, which lowers the density

Why is it important to ecosystems that ice floats in liquid water?

This ice layer insulates the water below it, allowing it to stay liquid, which allows the life within it to survive. If ice sank, the liquid water on top would also freeze and sink, until all the liquid water became frozen.

Why is water considered to be a universal solvent?

water is called the "universal solvent" because it dissolves more substances than any other liquid. This is important to every living thing on earth. ... This allows the water molecule to become attracted to many other different types of molecules.(Meaning water is the key to many diffrent types of molicules)

What is being measured in pH?

pH is a measure of how acidic/basic water is. pH is really a measure of the relative amount of free hydrogen and hydroxyl ions in the water.

What is the range of the pH scale?

The range goes from 0 to 14, with 7 being neutral. pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base.

What is the pH of water?

What types of substance have pH values less than 7?

Pure water has a neutral pH of 7

What types of substance have pH values greater than 7?

hydrogen(I think)

Give an example of a substance with a high concentration of H+ ions.

(I dont know but if u try asking a teacher it might be mor helpfull

Give an example of a substance with a low concentration of H+ ions.

(also unkown ask a teacher if you can)

What is specific heat?

Does water have a high specific heat? What does this mean?

Specific heat, ratio of the quantity of heat required to raise the temperature of a body one degree to that required to raise the temperature of an equal mass of water one degree.

In the specific heat example, which liquid has the highest specific heat? (Remember that the more heat it takes to make the liquid raise 1 degree in temperature, the higher the specific heat it has.)

Water

What is heat of vaporization?

is the amount of energy that must be added to a liquid substance to transform a quantity of that substance into a gas.

Does water have a high heat of vaporization?

Water also has a high heat of vaporization, the amount of energy required to change one gram of a liquid substance to a gas

Define vaporize.

 convert or be converted into vapor.transition from the liquid phase to vapor.

Why does water have a high boiling point?

The reason for the high melting and boiling temperatures is the hydrogen bonding between water molecules that causes them to stick together and to resist being pulled apart which is what happens when ice melts and water boils to become a gas.

Answer from: Quest

this protocol provides a detailed procedure for nucleoprotein extraction from cultured cells and tissues in an efficient manner.

Answer from: Quest

Environmental science studies the interactions between the physical, chemical, and biological components of the environment, including their effects on all types of organisms. earth science (also known as geoscience), is an inclusive term for all sciences related to earth (geology, meteorology, oceanogr maphy, etc). although environmental and earth science cover essentially the same material, environmental science places greater emphasis on the biological realm, while earth science places greater emphasis on the physical realm. environmental and earth science study the interactions of four major systems or “spheres” (figure 8.6). the geosphere consists of the core, mantle and crust of the earth.the atmosphere contains all of the earth’s air and is divided into troposphere, stratosphere, mesosphere, thermosphere and ionosphere.the hydrosphere contains all of the solid, liquid and gaseous water on earth, extending from the depths of the sea to the upper reaches of the troposphere where water is found. ninety-seven percent of the hydrosphere is found in salty oceans, and the remainder is found as vapor or droplets in the atmosphere and as liquid in ground water, lakes, rivers, glaciers and snowfields. the biosphere is the collection of all earth’s life forms, distributed in major life zones known as biomes: tundra, boreal forest, temperate deciduous forest, temperate grassland, desert, savannah, tropical rainforest, chaparral, freshwater, and marine.although the four systems have their unique identities, there is substantial interaction between them. environmental scientists study the effects of events in one sphere on the other spheres. for example, a volcanic eruption in the geosphere may cause profound direct and indirect effects on the hydrosphere, atmosphere and biosphere as follows: example 1 (volcano) on may 18, 1980, mount saint helens, in the state of washington, erupted. this event altered the surrounding environment, and provided scientists with an opportunity to study the effects of volcanic eruptions on the geosphere, hydrosphere, atmosphere and biosphere. such studies are vital because volcanic eruptions will continue to occur, and will have increasing impact on humans as people continue to settle lands closer to dormant volcanoes. the following are but a few of the myriad of interactions resulting from a volcanic

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