Matter and its Properties Essay

The fundamental make blocks of matter atomic number 18 atoms and molecules. These make up comp binglents and immixs. An atom is the smallest unit of an divisor that maintains the properties of that element. And element is a pure import made of solely one kind of atom. A compound is the substance that is made from the atoms of two or more elements that are chemically bonded. Water is an example of a compound beca single-valued function it is one of many compounds that consist of molecules. The hydrogen and group O molecules are chemically bonded to form a water molecule.Properties and Changes in motionEvery substance, whether an element or compound, has characteristic properties. Chemists use these properties to distinguish different substances and then use their knowledge of characteristics to separate them.A topographic mind may be a characteristic that corrects an entire group of substances. That belongings can be use to classify an isolated substance within that group . For example, are large groups of elements is metals. The property that sets than apart from anything else is that they conduct electrical energy well. Therefore, if scientists find an unknown element, and test it for electricity conduction, and it turns out to conduct electricity well, it is, in fact, a metal.Properties also define subgroups or substances. And can also help to reveal the identity operator of an unknown substance. However, identification usually cannot be made based on only one property. Comparisons of several properties can be used to determine the identity of an unknown. Properties are either intensive or extensive. An extensive property depends on the get of matter that is limn. These properties include volume, mass, and the amount of energy in a said substance. Intensive properties, however, do not depend on the amount of matter present. These properties include the meltingpoint, boiling point, density, and world power to conduct electricity and heat. Reg ardless of how much of a substance is present, these properties will always be the same. chemic and Physical Properties and ChangesPhysical Properties and Physical ChangesA material property is a characteristic that can be measured or observe without changing the identity of the substance. Physical properties describe the substance itself. Examples of these properties are properties such(prenominal) as melting point and boiling point.A change in a substance that does not involve a change in the identity of the substance is called a physical change. Examples of physical changes include grinding, gutting, melting, and boiling a substance or material. These changes do not change the physical identity of a property. For example If you rip a paper in half, does that change the identity of the two torn parts? The answer is no, it is noneffervescent a paper, just smaller and ripped. If you bend a paper clip, is it relieve a paper clip? Yes.Melting point and boiling point are part of an important classification of physical changes called change of state. A change of state is a physical change of a substance from on state to another. The three common states of matter are solid, liquid, and bollix. Matter in the solid shape has a expressed volume and definite shape. Matter in the liquid state has a definite value, nevertheless not a definite shape-a liquid can be shape or formed into many different shapes. Matter in the gas state has neither definite volume nor definite shape. chemic Properties and chemical ChangesPhysical properties can be observed without changing the identity of the substance, tho chemical properties cannot. A chemical property relates to a substances ability to undergo changes that transform it into differentsubstances. Chemical properties are easiest to count on when substances match to form (a) new substance(s). For example, when charcoal burns, it combines with oxygen in lineage to become a new substance, carbon dioxide gas. After th is chemical change, the original substances of the charcoal, carbon and oxygen, are no longer present. Another example is the ability of iron to rust by combining with oxygen in the melodic phrase (moisture).A change in which one or more substances are converted into different substances is called a chemical change or reaction. The substances that react in a chemical change are called the reactants. The substances formed by the chemical change are called the products. By burning charcoal, carbon and oxygen are the reactants in a combustion, or burning reaction. Carbon dioxide is the product.Chemical changes and reactions, such as combustion and decomposition, form products whose properties differ greatly from those of the reactants. Chemical changes, however, do not affect the total amount of matter present before and after a reaction. The amount of matter, and total mass, remain the same.