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...

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...

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 =...

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...

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...

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...

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...

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....

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...

The difference between uniform and non-uniform mixtures is the degree at which the materials are mixed and the sameness of their composition throughout the mixture. Another word for a uniform...

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...

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...

There are a number of factors that enable life to exist on Earth. Here is a brief list of some of those factors: Distance from Sun: Earth is at the right distance from the Sun, the star it orbits....

As tectonic plates move they sometimes move away from each other at divergent plate boundaries. The space left behind opens a large hole between the plates that is either filled with sediment,...

Specific heat capacity is the amount of heat required to raise the temperature of a substance by 1 K. It is expressed in the units J/ (kg*K). A high specific heat of a substance means that a large...

Research is simply a detailed and focused study, using scientific methods, to understand why something happens and/or what are its applications. Research is basically done for two purposes: to...

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...

A scientific question is a question that may lead to a hypothesis and help us in answering (or figuring out) the reason for some observation. Asking a scientific question is a part of the...

Hagar, I've always taught this as four steps, but I found this at answers.com and am copy pasting it here to help you out: 1. Understand the Problem2. Collect Information3. Form a Hypothesis4....

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...

The focal length (f) of a lens is the distance between the center of the lens and the point at which the reflected light, of a beam of light travelling parallel to the center line, meets the center...

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...

In ecology, there are different levels of organization regarding the biotic, or living factors, in the ecosystem. An individual is a single organism, a population is a group of organisms of the...

The atomic number of an atom is the number of protons. The atomic mass is the sum of the protons and neutrons. The net charge is the difference between the number of protons, which have positive...

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...

Elements are types of atoms that have a unique number of protons. In fact, from left to right, the periodic table is arranged by the number of protons that each element contains. The periodic table...

Food items are compounds--carbohydrates, lipids, proteins are in fact organic compounds, as they all contain carbon and hydrogen. Besides that, there is oxygen in all three and in protein, the...

When you set up an experiment, you have to have one set up where you introduce the independent variable (the experimental set up) and one where you do not (the control). That way, you can compare...

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...

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...

Atoms, elements, compounds, and mixtures are all forms of matter. Matter is defined as anything that has mass and volume. Atoms, elements, and compounds are all pure substances. A pure substance is...

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...

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...

A car is not a living thing because it does not fulfill some key characteristics that define living things. All living things are composed of cells. Unicellular organisms are composed of a single...

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...

Matter is composed of particles. Particles are composed of one or more type of atom. Changes in Matter Physical Change: Physical change occurs when the particles of a substance become rearranged,...

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...

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...

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...

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...

The given reaction is `CuO(s) + H_2(g) -> Cu(s) + H2O(l)` In this reaction, copper (II) oxide reacts with hydrogen to generate copper metal and water. This is an oxidation-reduction reaction, in...

Ribosomes, along with RNA (m, t, and r), work to produce proteins. If ribosomes are located on the endoplasmic reticulum, then it is called a rough endoplasmic reticulum (due to the "bumpy"...

Igneous, sedimentary, and metamorphic are the three types of rocks. Among these, igneous and metamorphic rocks share the following similarities: Both of them are types of rocks. Temperature is a...

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...

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...

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...

Average velocity is equal to the instantaneous velocity when acceleration is zero. In order for acceleration of an object to equal zero, there can be no change in speed or direction. For example,...

When a candle burns, there is both a physical and chemical reaction. The physical change is quite obvious and in fact, it can be seen. When the candle burns, the wax slowly melts and the candle...

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...

The electricity provider charges $0.09 per kilowatt hour. The light bulb uses 60 watts and is run 24 hours a day. To calculate the cost of running the light bulb we need to calculate how many...