Changes According To Modern Chemistry : Chemical And Physical Properties

Every individual is different in a specific way. Like people, substances have unique qualities, such as properties, which aid chemists to differentiate and identify the particular components the substances consists of. These particular qualities are identified as either physical or chemical properties. Physical properties are properties which do not require a chemical change of its composition in order for the substance to be classified. A few examples of physical properties include color, density, odor, boiling point, melting

A physical change includes a change in the material without affecting its composition, such as the physical state change. However, a chemical change includes the change in the composition of the substance. The change in color, formation of a gas or a solid product, and the production of energy are the evidences of a chemical reaction, thus, of a chemical change.

Chemistry relates to everything we touch, see, smell, hear, and taste because atoms make up everything in the universe. Chemistry influences so much in our everyday lives that it is hard to think of an activity that does not involve a chemical process in some way. The science also plays a major role in the human body. Our bodies are made up of chemicals, in fact almost 96% of our body mass is made up of four different elements: hydrogen, oxygen, carbon, and nitrogen. Besides the physical way I am affected by elements, chemistry also majorly affects me in my line of work as a certified nursing assistant. As a certified nursing assistant I work in a nursing home and

When faced with a problem a good scientist will use experiments, notes, debates, and more to their advantage to solve the tough questions. A groups of scientists did just that when faced with a problem of their own. A tiny vial with a white powdery substance in it was put in front of them, and they needed to find out what was in it! Faced with nine possible ingredients in the “Mystery mixture,” a well tray, a water dropper, and a toothpick, these scientists were a little overwhelmed, but determined. One of the first things they did was look at the substance and compare it to their own mixtures, using experiments or chemical properties. Chemical properties are a chemical’s reaction to another or more substances, and a change in it’s identity. When they observed the chemicals the students were using physical properties, or observing the chemical’s smell, texture, color, appearance, size, and shape. They believe Baking Soda and Citric acid are in the Mystery Mixture.

A physical change is one that affects only the physical properties of a substance, while a chemical change alters a substance at the molecular level.

The Ancient Greeks were the firsts to speculate on the composition of matter. They thought that it was possible that individual particles made up matter.

Hypothesis: If we use these materials and use magnets, water, burners, and filters on the mixtures and elements given we should determine what kind of effect these materials given will have on these mixtures and elements, physical or chemical.

Chemical and physical properties of substances are due to the structure and arrangement of atoms, ions or molecules and how these interact with each other

Changes in matter occur every day. There are two types of ways matter can be altered; physically and chemically. Physical changes do not change the composition of the matter while chemical changes occur when one or more substances turn into a completely new substance.

The viscosity of a fluid of measured by said fluid’s resistance to the gradual deformation caused by shear and tensile stress and is identified as a property of a fluid in which opposes the relative motion between two different surfaces of a fluid both moving at different velocities. A fluid that has no resistance to shear stress is known as an inviscid or ideal fluid. Not every fluid is highly or even somewhat viscous though zero viscosity can only be observed at rather lower temperatures but other than that all fluids can be said to have a positive viscosity and technically are said to be viscid and/or viscous. Though a fluid may only be called viscous if the viscosity of this fluid is substantially greater than that of water but it may be deemed ‘mobile’ if its viscosity is notably less than water. An example of viscosity would be when a fluid is being forced through a tube. The particles that compose the fluid would typically move more quickly near the tube’s axis but slower near said tube’s walls. There are some stresses in which require overcoming the friction between the particle layers in a fluid to keep said fluid in motion and for a given velocity pattern the stress required must be proportional to said fluid’s viscosity. An example of a viscous fluid would be honey, which because of both the high attraction between its particles, and the previously mentioned, resists the urge to flow. An example of a highly viscous fluid would be pitch, which is the

Physical and chemical changes are all around us such as that breakfast you had this morning. “Physical changes cause substances to change form… chemical changes produce a new substance… Some signs of an energy transformation include changes in color or odor, the production of gas or a solid, and the release of heat.” (Paragraph two) The goal of this investigation was to see the differences and inference physical and chemical changes. Our guiding question throughout the experiment was “Which changes are examples of a chemical change, and which are examples of a physical change?”

Matter is what everything around us is made up of and chemistry is concerned with how this matter - more specifically how atoms - can interact, transform and produce different substances depending on their structure. These different structures and arrangements atoms take ultimately create solids, liquids and gases. In solids, the atoms are close together and therefore vibrate in fixed positions. In liquids, atoms are further apart, however, they still are rather close and slide over each other. And in gases, there is a large amount of space in between atoms and they are constantly moving around. Many different substances that these atoms form - whether solids, liquids or gases - can be incredibly useful, and as a result, different techniques

Chemistry has been called the science of what things are. Its intent is the exploration of the nature of the materials that fabricate our physical environment, why they hold the different properties that depict them, how their atomic structure may be fathomed, and how they may be manipulated and changed.

* Viscosity-Surface Tension-properties of liquid. (n.d.). Welcome to City Collegiate. Retrieved November 9, 2011, from http://www.citycollegiate.com/viscosity.htm

It was finally given the name of chemistry in the 1870’s. The way it came to be was the watching of being mixed, dissolved, heated and cooled. You would use the mixing, dissolving, heating, and the cooling in alchemy. But chemistry also uses the natural processes, which include rusting, solubility, and fermentation. Now you might be wondering, who invented chemistry? Well no one did. It, as I said, started as an art and then soon grew into a science. Why is chemistry important? It is important cause whether you know it or not, chemistry has a part in our everyday lives. Chemistry makes us understand our lives better. What are some examples of chemistry that are used in our lives? Well cooking for one. You mix, dissolve, heat and cool in cooking. And if we didn’t cook, we would eat our food raw, and not have all the tasty treats that we make. Now let’s get back on the subject of chemistry itself. There are branches of chemistry, which narrows it down. Examples of these branches would be marine chemistry, forensic chemistry, atmospheric chemistry, etc. I wouldn’t be able to name them all. Each of the branches has its own type of thing of this world. For example, marine chemistry would have to do with fish and the ocean and those types of things. Now I thought we could go back into the history of it. It was the Egyptians who really started the chemistry, you know with making their gold and statues and things. They would melt metals and form it into the shape they wanted