Polyatomic Molecules Research Paper

Concept 2.1 Matter consists of chemical elements in pure form and in combinations called compounds

12. Briefly define the following: Matter is anything that takes up space. Element is any substance that can’t be broken down into substances with different properties. Atom is the smallest part of an element that displays the properties of the element.

1. An Element is a substance that cannot be broken down to other substances by chemical reactions, while a compound is a substance consisting of two or more different elements combined in a fixed ratio.

32. An empirical formula is the simplest mole ratio among the elements in a compound.

Molecule- a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical

An ionic bond is defined as a type of chemical bond formed between two ions with opposite charges (PBS & WGBH). An ionic compound is made of a positive and negative ion. The positive ion will have to be formed from an atom that has the tendency to lose electrons. The negative ion will have to be formed from an atom that has the tendency to gain electrons (PBS & WGBH). Another thing ionic bonds can be called is an electrovalent bond (Britannica).

Each chemical compounds has a certain percentage of ionic character in its bonds and the remaining percentage as covalent bonds. The only compounds that are accepted as being 100 percent covalent are the chemical combinations that happen between two similar atoms.However if atoms are different in the compound it will present a certain percentage of ionicity in its

A topic of great importance to all scientists is the identification of compounds, which is relevant in all aspects of their work in some way shape or form. Weather it may be determining what is causing sickness or what is polluting the air, it is very prevalent in the science world. In project 2, identification of cations and anions was preformed through a series of confirmation and elimination tests that ultimately led to identifying an unknown ionic compound made of cations and anions.

The periodic table is a table that categorises and displays all of the chemical elements. It is made up of groups, periods and blocks. A group (also referred to as a family) are the columns of elements, there are 8 groups. The elements in each family have similar but not identical properties and they all have the same number of outer electrons. E.g. lithium (Li), sodium (Na), potassium (K) are all soft, white, shiny metals because they are all members of group 1. A period is each horizontal row of elements, there are 7 periods. In a period, the elements are not alike in properties, the first element in a period is always an extremely active solid, and the last element in a period is always an inactive gas. Properties change greatly across a given row. Each new period represents the next shell which electrons fill. A block is a region of the periodic, there are 4 blocks: S, D, P and F.

Aqueous solutions of acids have a pH of less than 7." All of these factors help make up the inorganic substances. When writing a chemical formula, you use the Hill system. In this system, you write out carbon atoms first, hydrogen atoms second, and then all other atoms in alphabetical order (if the formula contains no hydrogen or carbon atoms, then you simply sort all the elements alphabetically). A binary compound is a chemical compound that contains two different elements. The opposite would be a polyatomic ion compound which is a chemical compound that consists of more than one atom. the difference between them is binary compounds have two different elements where as polyatomic ion compounds have two or more atoms. One contains compounds (which are already atoms put together) and one contains only atoms. A substances name depends on its compounds and atoms. The chart above names NO2 (NO_2)as nitrogen dioxide. This is its name because it has one nitrogen (nitrogen) and two oxygen (dioxide). Each chemical has a symbol and each compound has a name. This is how we write them

Formula of an Ionic Compound Introduction: The purpose of this lab is to determine the empirical formula of an unknown compound. An empirical formula is a formula that gives the proportions or the kinds of elements present in a compound but not the exact numbers or arrangement of atoms. In this lab, two solutions with equal mouths of reactant ions will be combined; the total volume of the solution will be held constant while the volume ratio of the reactant is varied.

into the blood. Doctors would measure the amount of tracer that is found in the urine of their patient in order to diagnose them. Which is the only subatomic particle that is directly involved in the chemical reactions between atoms? The only subatomic particle that is directly involved is an electron. What is potential energy? Potential energy is energy that matter has due to its location or structure. Explain which has more potential energy in each pair: boy at the top of a slide/boy at the bottom Boy at top of a slide because of his location. electron in the first energy shell/electron in the third energy shell Electron in third energy shell because of its relative distance from the nucleus water/glucose Glucose because of its structure (glucose has more chemical bonds) What determines the chemical behavior of an atom? The distribution of electrons in the electron shells determines the chemical behavior of an atom. For sodium: How many valence electrons does it have? 1 valence electron How many protons does it have? 11 protons Section 3 15. Define molecule. A molecule is formed by two or more atoms held together by a covalent bond. 16. Now, refer back to your definition of a compound and fill in the following chart: Molecule? Compound? Molecular Formula Structural Formula (y/n) (y/n) Water Yes Yes H2O H - O - H Carbon Dioxide Yes Yes CO2 O = C = O Methane Yes Yes CH4 Oxygen Yes No O2 O = O What type of bond is seen in O2? Explain what this means. A double covalent bond is

The data shows that Sucrose, Substance A, and Substance F are molecular compounds and that Sodium Chloride, Substance D, and Substance E are ionic compounds. The type of each compound was determined by the physical properties of the substances and how well they matched up with the properties of ionic and molecular compounds. According to “What properties distinguish ionic compounds form covalent compounds?” by Fred Senese, ionic compounds “conduct electricity when dissolved in water” and the melting points are “usually very

Molecules are atoms that are bonded together. When molecules are written in a chemical formula there will be subscripts and coefficients. Subscripts are the little number in front of each element, the subscripts tells us how much atoms does that element have. For example, H2O the little number is the subscript because it is in front of the element (H), this tells us that element H have two atoms and element (O) have just one. Coefficients are the big numbers written in front of the chemical formula. For example, 3H2O the coefficient in this case is the big number 3. This tells us that element (H) have 6 atoms because 3 are being multiply by 2, and the element (O) has 3 atoms (3 multiply by 1). Therefore, finding out the number of atoms is like solving math equations. You

A compound on the other hand consists of two or more elements that have been chemically joined together in a specific ratio and reaction method. Compounds display properties that are completely different