Mariel Beauroyre
9-B
A chemical bond is form with the joining of two or more atoms (when two atoms are joined they form molecules and compounds.)
Which are being held together by the attraction (force attraction) of atoms through sharing as well as exchanging electrons.
Chemical bonds are found in molecules, crystals, or in solid metals. They also organized the atoms in order structures.
But why are they important you may ask?
They’re important because every material or substance in the world depends on chemical bonds for it to be made. Chemical bonds are everywhere in our water, salt, air, plants, synthetic materials and many more.
Take for example table salt. Salt is made out of sodium (Na) and of chlorine (Ci) NaCi. Sodium is a hard
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The transfer of electrons (either gain or lost) of this two elements produce CaCi . Which has several uses, highway maintenance when there is ice and snow, and even medicine for people with low levels of calcium in their blood.
Covalent bond: (electrons shared between atoms)
Covalent Bond in were one or more pairs of electrons are shared by two atoms. This type of bond occurs with non-metal atoms that share electrons. The only electrons involved are the ones found in the outer energy level of an atom. These electrons are also called valence electrons. The sharing of electrons occurs because the atom wants to have a full shell and become a stable atom.
There are two types of covalent bonds:
Polar Covalent: two atoms that have different electronegativity causing the separation of charges.
Non-polar: when the two atoms have identical or similar electro negativities so the charges are distributed equally.
A covalent compound: it is a molecule formed by covalent bonds in which atoms share one or more pairs of valence electrons.
Properties of Covalent compounds:
• Hard
• Good insulators
• Transparent
• Poor conductors of heat and electricity (specially in water)
• Tend to be gases, liquids or soft
Covalent bonding - Covalent bonding is when two atoms share electrons this can only occur between two non-metals. They share electrons to fill up their outer shells, this makes the atoms stable. A Covalent bond can form up to one to three Covalent bonds with non-metals depending on how much electrons they possess. They don't always share electrons
Our latest lab covered a detailed description of atoms and molecules, laid out in a distinctive way using balls and sticks for valence electrons and bonds. We were given charts to fill out recoding our findings regarding several molecules and their electron count, type of bonds,
All matter is made of particles called atoms. An atom is smallest unit of matter. A matter can be solid, liquid or gas. When a group of atoms bond together this makes a molecule. The molecule is the base of chemical compounds that is involved in chemical reactions.
Matter is made up of atoms; atoms are made of positively charged protons, neutral neutrons, and negatively charged electrons. 3. The measure of space that the molecules occupy (volume) is derived from the space in between the molecules and not the space the molecules contain themselves. 4. The motions for: • Solid- are not able to move out of their positions relative to one another, but do have small vibrational movements.
AP Chemistry Semester 1 Final Review 2016 Basics of Chemistry: Name the following compounds BO3 H2S NaOH OF8 PCl6 HNO3 HgNO2 Write the formula for each compound Pentaboron triselenide Sulfuric Acid Carbon Monoxide Lithium Chloride How many moles are in 58.6 g of AgNO3 How many grams are in 2.5 moles of Cl2
Double Replacement Lab Report Date Completed: October 8, 2015 Objective To analyze and determine if a chemical reaction occurred between two compounds using the concepts we learned in class. Also, if the chemical reaction occurred, to determine if it formed a precipitate or gas. Safety General Safety Precautions: Do not touch the chemicals Use of gloves and coats are recommended, use of goggles should be required Keep the work area clean Dispose of the chemicals properly, DO NOT dispose them in the sink Clean up your work station Wash your hand before and after the lab Make sure all chemicals are labeled correctly NEVER return chemicals to reagent bottles Use the wafting technique to smell the chemical Clean up spills immediately
But when they join with other atoms, like oxygen in the air, they form molecules. “In the year of 1837 and so forth, the pennies were made of copper, tin and zinc. Now, current
Atoms are the basic building blocks of all matter(Doc.3). These small particles have a nucleus and a certain number of protons ,neutrons ,and electrons(O.I). The number of protons is independent to the element, and can be used to find it on the periodic table(Doc.2). Protons are positively charged particles(Doc.3).
Chem 111 Post-Exam Self-Assessment See the instructions in Canvas for more details about how this assignment will be scored. 1. Fill in these blanks: Exam Number __3__ Your Predicted Exam Score _75_% Actual Exam Score _77.67% Current Course Score _
They are matter and matter is them. Atoms are made of multiple things. Their layout is a dense nucleus surrounded by a large cloud of electrons. The “cloud” of electrons surrounding the nucleus give off a negative charge.
Dylan Clayton Mrs. Beckwith Pre-Ap Physical Science 9 7 December 2015 The Importance of Electrons Electrons are the negatively charged subatomic particles that revolve the center, nucleus, of an atom. They are arranged in different energy levels and they orbit around the nucleus like the Earth revolves around the Sun. Electrons are important in atoms, compounds, and chemical bonds involved in chemical reactions. These subatomic particles have importanance to the organization of elements into periods & groups, characteristics of elements in the same periods & groups, and the formation of compounds based on periodic table placement.
How can someone explain the relationship between a chemical engineer and his job? It’s pure chemistry! Chemical engineers work with chemicals to develop new products. They may engineer a more efficient source of fuel. When engineering this, they would calculate emissions that are released when the fuel is used.
This results in elements combining together to create a molecule, with subscripts (if necessary). Lastly, particles are referred as formula units. (ionically bonded- metal to nonmetal). Labelling them include pairing a metal element to a nonmetal. This will result in elements names combining together.
Many people do not realize that chemistry is a part of our day to day lives. One specific thing we see on a daily basis is the colors and paint people use in paintings, on buildings, and any other place paint could be. When this paint is developed, the people who make it have to decide exactly what the compound should be made up of. This is an important thing to consider when making these paints because as discussed in Chemistry 101 lab, compounds are different things that develop one item, in this case it is paint. They have to make sure that the paint is homogenous because if it was heterogeneous when being applied, the paint would not go on well.
Properties of Ionic and Covalent Substances Lab Report Introduction The purpose of this lab was to determine which of the following substances: wax, sugar, and salt, are an ionic compound and which are a covalent compound. In order to accurately digest the experiments results, research of definitions of each relating led to the following information: ionic compounds are positive and negatively charged ions that experience attraction to each other and pull together in a cluster of ionic bonds; they are the strongest compound, are separated in high temperatures, and can be separated by polar water molecules. A covalent compound forms when two or more nonmetal atoms share valence electrons; covalent compounds are also