Science Questions and Answers

Science

Any substance dissolved in another substance is considered a solution. The solvent (the stuff that does the dissolving) in most household substances is water. So, anything dissolved in water would...

Latest answer posted June 21, 2018 5:01 pm UTC

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Science

Most products and materials that would be found in your home are compounds, mixtures or alloys. Only the most stable elements will resist reacting over time. Metals found in the home are often...

Latest answer posted January 21, 2016 10:24 pm UTC

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Science

A symbiotic relationship is a relationship between two organisms that can be helpful, harmful, or have no effect. A mutualistic relationship benefits both species involved in the relationship....

Latest answer posted December 7, 2015 12:55 pm UTC

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Science

Although on the surface it seems that computers are very sophisticated devices, capable of accomplishing complex tasks, in fact, computers can only do a limited number of very simple tasks on a...

Latest answer posted September 19, 2015 9:37 pm UTC

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Science

Similarities ... → Both involve in production of energy → Both involve the exchange of gases → Both the process takes place in cell organelle which was considered as endosymbiotic organism. They...

Latest answer posted June 23, 2012 5:12 pm UTC

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Science

Saturated, unsaturated and supersaturated refer to three different conditions of a solution. A saturated solution contains the maximum amount of solute that will dissolve at that temperature. Any...

Latest answer posted November 19, 2015 4:27 am UTC

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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...

Latest answer posted October 20, 2012 2:44 pm UTC

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Science

The ranking of the given items from largest to smallest is as follows: Organism > Cell > Nucleus > Chromosome > Gene > DNA DNA is a molecule that can be thought of as the blueprint...

Latest answer posted December 7, 2018 12:04 pm UTC

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Science

The cell theory is an explanation of what cells are and why they exist. The three main parts are: 1) All living things are made of cells and their products, 2) New cells are created by old cells...

Latest answer posted July 17, 2012 2:55 pm UTC

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Science

Based on the energy requirements or generation, reactions can be classified as either endothermic or exothermic. The reactions which need energy to proceed are known as endothermic reactions. The...

Latest answer posted May 11, 2016 12:18 am UTC

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Science

First, we should recognize that the formula (H2SO4) is not hydrochloric acid. The root "chlor" in "hydochloric acid" denotes the presence of chlorine, which is not present in H2SO4. Hydrochloric...

Latest answer posted January 19, 2014 8:57 pm UTC

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Science

It's important for scientists to know the properties of matter because all things are made up of matter. Each type of matter has different physical characteristics and scientists need to know and...

Latest answer posted November 18, 2015 8:36 pm UTC

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Science

In a galvanic cell, the reason the voltage is generated is because of the combined electric potentials of the two metals in the metal sulfate solution of the electrolyte. If you increase the...

Latest answer posted January 15, 2012 10:20 am UTC

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Science

From smallest to largest: nucleotide, gene, chromosome, genome. Nucleotides are the smallest building blocks of DNA. There are four nucleotides (A, G, T, C) which arrange in pairs to form the long...

Latest answer posted May 9, 2016 9:40 pm UTC

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Science

There are a couple of ways to determine if a reaction is exothermic or endothermic. Endothermic meaning that heat is added to the reaction to make the reactants interact and exothermic meaning heat...

Latest answer posted September 29, 2010 8:45 am UTC

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Science

Advantages: Bar charts are pretty easy to interpret, and there's a very clear relationship between size and value that allows easy comparison. They're simple to make and most people have experience...

Latest answer posted July 31, 2016 11:43 pm UTC

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Science

Let's reason our way through this.Organelles are the substructures (such as mitochondria and chloroplasts) inside cells that perform particular functions. They are therefore smaller than...

Latest answer posted July 22, 2016 9:09 pm UTC

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Science

Using a pedigree to determine the genotype of an individual for a particular trait, based on the individual’s family history can be done via the following steps. Please note that these steps are...

Latest answer posted February 22, 2016 7:48 pm UTC

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Science

There are two paramount differences between art and science. The first is that art is subjective while science is objective. The second is that art expresses knowledge, most often in the form of...

Latest answer posted June 17, 2010 4:17 am UTC

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Science

The given chemical equation is for reaction between phosphorus (P) and oxygen (O2). The product is phosphorus pentoxide (P2O5). The reaction is : P + O2 -> P2O5 A well-balanced chemical...

Latest answer posted May 5, 2016 9:20 am UTC

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Science

Sound and light are similar in that both are forms of energy that travel in waves. They both have properties of wavelength, freqency and amplitude. Here are some differences: Sound can only travel...

Latest answer posted February 25, 2016 2:51 am UTC

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Science

The smallest item in the list would be organelles. Organelles are tiny structures within a cell, that help it to function. Example of organelles are-- nucleus, mitochondria, cell membrane to name a...

Latest answer posted September 9, 2010 3:07 am UTC

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Science

Some individuals do in fact bruise easily, they may have an ascorbic acid(Vitamin C) deficiency or some coagulopathy. Perhaps they are taking a blood thinner medication like Coumadin, ASA, or...

Latest answer posted June 5, 2010 10:10 am UTC

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Science

The reactivities of elements can be predicted by periodic trends (patterns within the Periodic Table.) Let's start with periodic trends. An element's reactivity is its tendency to lose or gain...

Latest answer posted November 27, 2015 7:40 pm UTC

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Science

One reason for sudden hair and nail growth could be due to an improvement in your overall health. There are many vitamin deficiencies that can cause your hair and nails to grow slowly. Sometimes...

Latest answer posted May 25, 2010 8:24 am UTC

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Science

Alternatively we can use the conversion of gravitational potential energy (maximum at top of swing with minimum kinetic energy because it is momentarily motionless) to kinetic energy at the bottom...

Latest answer posted July 5, 2011 5:58 pm UTC

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Science

A material can be a poor conductor of heat, electricity, or both. A poor conductor means that the substance will not easily conduct heat or electricity (or both) as easily as a conductor. For...

Latest answer posted July 8, 2018 12:07 pm UTC

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Science

The four types of consumers in ecology are herbivores, carnivores, omnivores, and decomposers. Herbivores are consumers who only eat vegetables, plants, grass, or some type of vegetation. An...

Latest answer posted December 5, 2015 8:34 pm UTC

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Science

The empirical formula of a chemical compound is CH2O. The molar mass of carbon is 12, the molar mass of hydrogen is 1 and the molar mass of oxygen is 16. The empirical formula of a compound is the...

Latest answer posted January 31, 2012 10:46 am UTC

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Science

A closed system does not exchange mass with its surroundings and is only capable of exchanging energy with the surroundings. In comparison, an open system is capable of exchanging both mass and...

Latest answer posted January 16, 2016 2:19 pm UTC

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Science

Atoms consist of electrons, protons and neutrons. While the protons and neutrons are present inside the nucleus, the electrons orbit around it. Among these particles, protons are positively...

Latest answer posted May 15, 2016 6:20 pm UTC

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Science

Sexual reproduction, something that is more familiar to humans as it is how humans replicate, requires two parents (or gene sources) contributing genetic information to an offspring that will be...

Latest answer posted May 12, 2016 2:15 pm UTC

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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 =...

Latest answer posted October 22, 2014 12:00 am UTC

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Science

According to the biologists Gerald and Teresa Audesirk, all members of the animal kingdom have six characteristics in common. They are as follows: All animals are made up of cells that do not have...

Latest answer posted June 19, 2016 5:51 pm UTC

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Science

Electroplating is the process of plating one metal over another. It is done for various purposes, most commonly for imparting corrosion resistance and decorative appearance. There are a number of...

Latest answer posted February 21, 2016 2:30 pm UTC

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Science

Dialect is a special form of speaking belonging to a group. Register is a linguistic term used to describe changing how one talks based on the situation. I will be using To Kill a Mockingbird by...

Latest answer posted September 29, 2012 11:55 pm UTC

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Science

This question can be solved using the classic equation of motion: distance = velocity * time. We have two known parameters and one unknown parameter; however, in order to solve the problem we must...

Latest answer posted February 23, 2012 10:20 pm UTC

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Science

A solution is the final product once a solute is dissolved within a solvent. A very important example of a solution used in hospitals is saline used in IVs. Saline is made up of salt and water....

Latest answer posted July 30, 2015 1:34 am UTC

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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...

Latest answer posted July 6, 2009 9:23 pm UTC

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Science

A number of body systems are used when we are running. These systems include the nervous system, skeletal system, muscular system, respiratory system and the circulatory system. When we decide to...

Latest answer posted March 19, 2016 1:42 pm UTC

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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...

Latest answer posted January 22, 2012 5:13 am UTC

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Science

It's important to distinguish between temperature and climate (there seems to be some confusion in the wording of the question). There are six kinds of climate but the main factors that affect (or...

Latest answer posted November 28, 2015 2:03 pm UTC

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Science

Precipitation, in the simplest terms, is the process by which water, contained in the clouds, falls down under the influence of gravity. There are several forms of precipitation, including rain,...

Latest answer posted March 28, 2016 12:39 pm UTC

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Science

To understand what energy is created by burning wood, one must first look at the two basic types of energy: potential energy and kinetic energy. Potential energy is defined as any type of stored...

Latest answer posted November 18, 2015 11:13 pm UTC

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Science

Non-reducing sugars do not have the aldehyde group and so they cannot reduce copper sulphate like reducing sugars would do when tested with the Benedict’s reagent. To test for non-reducing sugar,...

Latest answer posted May 11, 2016 9:30 pm UTC

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Science

There are many advantages to classification, both in science and "out" of it. Classification allows us to see relationships between things that may not be obvious when looking at them as a whole....

Latest answer posted November 21, 2015 2:02 am UTC

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Science

Elements that are metals tend to lose electrons and become positively charged ions called cations. Elements that are nonmetals tend to gain electrons and become negatively charged ions called...

Latest answer posted March 12, 2016 7:52 pm UTC

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Science

Parallel circuits are used in homes because the loads can be operated independently of each other. That means that you can have an electrical item turned on and running without needing to have all...

Latest answer posted November 21, 2015 1:35 am UTC

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Science

The golgi apparatus contains vesicles and folded membranes and is involved in cellular transport. It is a packaging organelle. The golgi apparatus packages proteins into vesicles inside of the cell...

Latest answer posted July 11, 2016 8:43 pm UTC

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Science

Mg reacts with HCl according to this equation: `Mg_((s)) + 2 HCl_(aq) -> MgCl_2_(aq) + H_2_(g)` If this reaction takes place under standard conditions the enthalpy change (∆Hº) can be...

Latest answer posted April 17, 2016 5:56 am UTC

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