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  • Chemistry
    https://www.youtube.com/watch?v=-r_9QZXwT2c A compound is a chemical combination of two or more elements in definite proportions. For example, two hydrogen molecules + one oxygen molecule= one...

    Asked by cm16 on via web

    4 educator answers

  • Science
    This is a great question and I can see your confusion. There are similarities, but there are also differences. I will give you a definition of each and then provide an example. Speed refers to how...

    Asked by azzyj on via web

    2 educator answers

  • Chemistry
    A compound, when we are talking about chemistry, is simply any substance that is made up of two or more elements which react with one another. The elements must be present in fixed ratios. So...

    Asked by oliviastabley on via web

    3 educator answers

  • Science
    Take note that the nucleus of an atom is composed of protons and neutrons. And the number of particles present in the nucleus is referred as mass number (Also, called as atomic mass). mass number =...

    Asked by laineyroy on via iOS

    1 educator answer

  • Science
    The cell theory was arrived at after much study of living cells due to the intellectual contributions of Matthias Schleiden who noted all plants contains cells, and in 1838 added that different...

    Asked by mgoun on via web

    2 educator answers

  • Science
    While the functions and applications of a computer are almost endless, we can sense four primary purposes that are all linked to data (information): Entering data, manipulating data, viewing...

    Asked by malfoyxx321 on via web

    1 educator answer

  • Science
    A rainbow is made by the reflection and refraction of light that interacts with raindrops. Depending on how this interaction occurs with your location relative to the sun and the raindrops you may...

    Asked by enotes on via web

    7 educator answers

  • Solar System
    Our data has improved considerably in the last 20 years. Mercury: no moons Venus: no moons Earth: 1 moon Mars: 2 moons, Phobos, Deimos Jupiter: 67 moons, some of which do not yet have proper...

    Asked by enotes on via web

    1 educator answer

  • Biochemistry
    Similarities:Both involve ion movement. Both use ion channels to move ions across the cell membrane, in or out of the cell.Differences:Passive Transport (or Diffusion) moves ions from high...

    Asked by ttt12 on via web

    2 educator answers

  • Science
    Polar and non-polar molecules A molecule is classified as a polar moleculewhen the arrangement of the atoms is such that one end of the molecule has a positive electrical charge and the other end...

    Asked by soccergirl21 on via iOS

    1 educator answer

  • Science
    Reptiles are cold-blooded animals. They typically lay hard shelled eggs and have skin covered with scales or a bony external plate. They either have four legs or descended from four limber...

    Asked by topher01 on via web

    1 educator answer

  • Biology
    Using a light microscope, one can view cell walls, vacuoles, cytoplasm, chloroplasts, nucleus and cell membrane. Light microscopes use lenses and light to magnify cell parts. However, they usually...

    Asked by tlvw on via web

    1 educator answer

  • Science
    Helpful bacteria: E. Coli are found in the intestines of humans and aid in digestion. Streptomyces is used in making antibiotics. Rhizobium are helpful bacteria found in the soil. They convert...

    Asked by cakeyum3838 on via web

    1 educator answer

  • Science
    Solute and solvent are the two components of a solution. A solvent is a substance that dissolves the solute. And the solute is the substance being dissolved. To identify them, take note that if the...

    Asked by anum30140a on via iOS

    1 educator answer

  • Speech
    I always love speeches on political scandal. You would have plenty of ammunition right now. You can talk about the Governor of Illinois trying to sell Obama's Senate seat. Or you can fall back on...

    Asked by hima-20 on via web

    11 educator answers

  • Chemistry
    You cannot directly convert grams to atoms. First you must covert your grams to moles, then you can take the moles and covert to atoms. If you take your 878 grams of fluorine and then look at the...

    Asked by msdee on via web

    1 educator answer

  • Science
    Differences: - DNA is double-stranded, RNA is single-stranded. - DNA contains a pentose sugar Deoxyribose, RNA contains the pentose sugar Ribose. A pentose is a 5-carbon sugar molecule. - DNA is...

    Asked by bubbles13 on via web

    2 educator answers

  • Science
    The physical change occurs when the heat displaces the bonds that solidify the wax. Upon cooling, the wax is able to form the bond again. The chemical changes are much more complex. The first...

    Asked by dematha on via web

    2 educator answers

  • Science
    There are several observations that we can identify some chemical reaction have taken place with in a system. Change in temperature-usually when a reaction takes place heat will be absorbed or...

    Asked by connorcolin3 on via web

    1 educator answer

  • Science
    Both the smooth and rough endoplasmic reticulum help in the production and storage of proteins The main difference is that one contains ribosomes on it and the other does not. The rough endoplasmic...

    Asked by enotes on via web

    1 educator answer

  • Physics
    The term "relative density" means the same as "specific gravity." It is a measure of how dense one thing is when compared to a given reference. The reference is usually water. With respect to...

    Asked by mahmuda092569 on via web

    1 educator answer

  • Science
    Renewable energy sources are ones which don't run out - which can be renewed. We can keep using them and using them, and we'll never run out. Examples of renewable sources include wind, water power...

    Asked by fjnfkbjnkgjdf on via web

    1 educator answer

  • Science
    The four basic functions of a computer system are as follows: input output processing storage Let's look at each individually: Input Transferring of information into the system. This may be through...

    Asked by sarafina12345 on via web

    2 educator answers

  • Biochemistry
    The biggest difference between photosynthesis and respiration is that photosynthesis only occurs in plants and some bacteria while respiration occurs in all living organisms. They do share one big...

    Asked by Scott Locklear on via web

    2 educator answers

  • Science
    First, lets make sure we understand the word "ratio". A ratio is a comparison of any two things, usually in numerical form. We could compare the number of boys in one of my classes to the number...

    Asked by magicgirl12 on via web

    1 educator answer

  • Science
    Any object will accellerate due to gravity -9.81 m/s^2. By integrating this acceleration over time, one obtains the velocity at any time t. v = gt + v0. In this case, the ball started at rest, so...

    Asked by papertee on via web

    1 educator answer

  • Science
    Photosynthesis Respiration -Occurs in plants only - Plants and animals -CO2 + H2O = Sugars + O2 - Sugars + O2 =...

    Asked by akatude on via web

    3 educator answers

  • Science
    Electron orbitals that have the same energy levels are called degenerate orbitals. When assigning electrons to orbitals in determining electron configurations, the Aufbau principle states that...

    Asked by rocky.goyal on via web

    1 educator answer

  • Science
    There are several differences between monocots and dicots, here are three big ones. The main one (that gave rise to the names) is that monocots have seeds that are one piece (like corn), while...

    Asked by kalaun on via web

    2 educator answers

  • Science
    There is no way to prevent earthquakes from happening. Since they are caused by the movements of plates that make up the Earth's crust, they cannot be prevented by any means that human beings now...

    Asked by tanya-gupta on via web

    4 educator answers

  • Science
    Sodium chloride (NaCl) and silver nitrate (AgNO3) are both solids that are highly soluble in water. They give a double displacement reaction where the ions switch places and give sodium nitrate...

    Asked by sexymama1267 on via web

    1 educator answer

  • Chemistry
    There exists several characteristics that make the difference between a mixture and a compound. A mixture can contain components in any proportions while a compound contains components in fixed...

    Asked by essesy on via web

    2 educator answers

  • Physics
    The formula for pressure is P = F/A In this equation, P stands for pressure while F stands for force and A stands for area. Pressure is typically measured in a unit called the Pascal. So what this...

    Asked by ustaad on via web

    1 educator answer

  • Science
    When using the scientific method to solve a problem or question, one formulates an educated guess or hypothesis which is a possible answer to the problem or question. In order to test your...

    Asked by blackeye on via web

    2 educator answers

  • Science
    Humans affect the phosphorus cycle mainly by the use of fertilizers and raising livestock, especially hogs. Fertilizers and hog waste are high in phosphorus, which makes its way into the soil...

    Asked by jessicaromero08 on via web

    1 educator answer

  • Science
    An atom has 3 basic particles that it is composed of. They are protons, neutrons, and electrons. The protons are located in the nucleus of the atom and have an atomic mass of about 1 amu (atomic...

    Asked by sammy12 on via web

    1 educator answer

  • Science
    Both of these terms are related to describing components of an ecosystem, or the community of living organisms that live in a particular environmental system. Biotic factors are the living...

    Asked by maxine_gymnast_1 on via web

    1 educator answer

  • Science
    The purpose of the battery in a series circuit is to give the circuit a source of energy. The purpose of a switch in a series circuit is to make it easy to open or close the electrical circuit,...

    Asked by ranon on via web

    1 educator answer

  • Science
    Not many, newborn infants have more cartilage than bone at birth. This is why newborns are so limber, cartilage is more pliable than bone. Bones form and develop over time by a process called...

    Asked by victorsnanny on via web

    1 educator answer

  • Science
    Indicators are weak acids or bases which change color depending on the pH of the solution. Because they have such vivid color changes, only small amounts of indicators must be added to a solution...

    Asked by thegreatone7 on via web

    1 educator answer

  • Science
    Physical property refer to the characteristic of matter that can be observed or measure without changing its composition.Examples are color, odor, phase of matter, freezing point, melting point,...

    Asked by paularinconnnn on via iOS

    1 educator answer

  • Science
    There are very few similarities between elements, compounds and mixtures. At the most basic level, all the three are composed of atoms. Elements and compounds are purely homogeneous substances and...

    Asked by enotes on via web

    2 educator answers

  • Science
    First of all, there are structural differences. This is reflected in the part of the name that refers to the sugar/carbohydrate. RNA contains ribose, while DNA contains deoxyribose, a similar sugar...

    Asked by jordan95 on via web

    1 educator answer

  • Science
    The process that happens to both potato slices is called osmosis, which is a diffusion of water across the semipermeable membrane the potato slice cells possess. The water will either go into the...

    Asked by cadii on via web

    1 educator answer

  • Science
    Adhesion and cohesion are water properties that affect living and non-living things on earth through water molecules. Cohesion: Water is attracted to waterAdhesion: Water is attracted to other...

    Asked by nhitrinhcute1011 on via web

    1 educator answer

  • Science
    We are looking at the difference between elements, compounds, and mixtures. Elements are the purest form of a chemical substance and are composed of only one type of atom. In other words, all of...

    Asked by mattlimey on via web

    1 educator answer

  • Science
    Substances have properties and characteristics by which we can identify and thus classify them. Two of the broad classifications of these would include the chemical and physical properties of a...

    Asked by directioner20 on via iOS

    1 educator answer

  • Science
    A change can't be both physical and chemical, but physical and chemical changes can occur simultaneously. This is what's happening with the burning candle: the wax is melting, which is a physical...

    Asked by user9261126 on via web

    2 educator answers

  • Science
    Solutions are formed by mixing solute in a solvent. Thus, a solution is a homogeneous mixture. We can find a number of solutions in our homes. Here is a brief list: Salt water is formed when we mix...

    Asked by kebora13 on via web

    1 educator answer

  • Science
    The chemical formula of sodium carbonate (washing soda) is Na2CO3. When it is heated it undergoes a thermal decomposition reaction. This takes place above 500 degree C. The reaction of...

    Asked by t521863 on via web

    1 educator answer

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