Dottoressa Di Filosofia

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

1-1: Insert the chemical symbol in the answer blank for each of the following elements.

All matter has volume and mass. Density expresses the relationship of these two primary properties of matter. Mass is the measure of how much matter an object contains. The more matter an object

Essential Answer: Scientific Notation can be used to express different quantities by reducing a large or small number into a short mathematical sentence.

Matter is often defined as mass that can be physically observed by the senses, it can be measured scientifically and is tangible , it could be said the material world unlike aspects of social worlds is less abstract and easier to define, for example a building which comprises of bricks, wood, metal and other materials built into a specific shape compared to a community which can relate to people of the same place or shared values or interests or all. That is not to say that matter just is, it too can have agency and varying meanings dependent upon the

Subscripts show the correct proportions of atoms/ions in a chemical formula. They are the small numbers within the chemical formula. They tell how many individual atoms/ions are present.

Chemistry in Action I. Chemical Reactions (Section 8.1) A. Molecules and Chemicals Reactions 1. Chemical Reactions- a chemical change resulting from a collision between atoms or molecules.

Elements can be classified as either atomic element or molecular element. Atomic elements exist in nature as single atoms, where as, molecular Element do not normally exist as single atoms. Molecular elements exists as molecules.

Density is normally measured using a graduated cylinder and measured in grams per centimeter cubed. Density is what defines a substance. If you were to change the mass of an object, the density would change. Hypothesis: If lemon juice is heated up, then it will be less dense because the atoms will be more compacted.

MEASUREMENTS IN SCIENCE Introduction: In this lab, a sample of metal and a sample of plastic were identified using their respective densities. Different materials have a unique density which is defined to be the amount of mass inside a specific volume of the material. The density does not change with the size or shape of the object, so it can be determined using any size sample of the material by dividing its mass by its volume.

Let's start by defining matter. People have asked "what is matter?" for quite a long time. Democritus, the ancient Greek philosopher and mathematician, envisioned structure in the building blocks of everything and he called the basis for this structure an atom; he wrote, "nothing exists except atoms and empty space: everything else is opinion." At the atomic level, the world can be described in terms of the elements, including hydrogen, oxygen, carbon and the like.

INTRODUCTION Matter and energy are the constituents of this universe. Matter is the condensed form of energy. Mass is the most important characteristic property of matter. It is the content of matter, described by its property of inertia. Matter with inertia (mass) property; continue to be in constant motion or in constant rest.

In the field of quantum mechanics, we observe and investigate the motion and interaction of discrete quantities of energy, but we do not discover any variation in the quantity of matter. For example, if we were to burn a piece of coal, collect all the ashes and smoke, it would amount to the exact same weight.

Chemical formulas are used as abbreviated notation to show the chemical composition of compounds. Chemical formulas are used to show how new compounds are formed by chemical reactions. In order to learn how chemical formulas are written, we must first learn to understand the different symbols used to identify compounds that are formed.

Quantity equations such as F = ma, F = G m1m2/r2, E = mc2 express physical phenomena, and are the basis of most scientific models. Quantities do not exist in isolation, but are part of a quantity system comprising base and derived quantities. A base quantity was formerly called a dimension; now ‘dimension’ expresses the combination of base quantities in a derived quantity, for example in a mass-length-time system, the dimensions of energy are mass*length2/time2 (ML2T-2).