My Chemistry Project! By: Haley Turbeville Core: 1 Date: 2/27/17-2/30/17

Chemistry- is a branch of physical science that studies composition, structure, properties and change of matter. Chemistry includes topics such as the properties of individual atoms, how atoms form chemical bonds to create chemical compounds, the interactions of substances through intermolecular forces that give matter its general properties, and the interactions between substances through chemical reactions to form different substances.

Chemistry is sometimes called the central science because it bridges other natural sciences, including physics, geology and biology. For the differences between chemistry and physics see comparison of chemistry and physics.

Scholars disagree about the etymology of the word Chemistry. The history of chemistry can be traced to alchemy, which had been practiced for several millennia in various parts of the world.

Etymology- The word chemistry comes from alchemy, which referred to an earlier set of practices that encompassed elements of chemistry, metallurgy, philosophy, astrology, astronomy, mysticism, and medicine. It is often linked to the quest to turn lead or another common starting material into gold, though in ancient times the study encompassed many of the questions of modern chemistry being defined as the study of the composition of waters, growth, embodying, disembodying, drawing the spirits of the bodies and bonding the spirits within bodies by the early 4th century Greek-Egyptian alchemist Zosimos. An alchemist was called a 'chemist' in popular speech, and later the suffix "-ry" was added to this to describe the art of the chemist as "chemistry".

The Metals, Nonmetals, and metalloids are located on this Periodic Table!!! Metalloids have properties of both metals and nonmetals and do not fit neatly into either category. They are often lustrous like metals but tend to be brittle like nonmetals, metalloids are classified as semiconductors as they have a moderate ability to conduct heat and electricity.

What are Protons, Electrons and Neutrons- Atoms are made of extremely tiny particles called protons, neutrons, and electrons. Protons and neutrons are in the center of the atom, making up the nucleus. Electrons surround the nucleus. Protons have a positive charge. Electrons have a negative charge. Their Charges- Protons are positive, electrons are negative, and neutrons have no charge.

This is the Father of the Periodic Table!! His name, Dmitri Ivanovich Mendeleev!!
This is the element that is most reactive, its called Fluorine!!!
The element(s) that are the least reactive are called Noble Gasses!!!

What info do each number(s) tell- Besides placement on the periodic table the atomic number defines the element by defining the number of protons in the atom.

Carbon- Atomic Number 6 has 6 protons. Nitrogen- Atomic Number 7 has 7 protons.

The proton number and the neutron number combine to provide the atomic mass number of the element.

Carbon- 6 protons + 6 neutrons = 12 amu. Nitrogen- 7 protons + 7 neutrons = 14 amu.

Atomic Number = # of- The atomic number uniquely identifies a chemical element. In a uncharged atom, the atomic number is also equal to the number of electrons. The atomic number, Z, should not be confused with the mass number, A, which is the number of nucleons, the total number of protons and neutrons in the nucleus of an atom.

Atomic Mass = # of- The atomic number of an atom is simply the number of protons in its nucleus. The atomic weight of an atom is given in most cases by the mass number of the atom, equal to the total number of protons and neutrons combined.

How do you know the number of electrons- The number of electrons in an element can change. For a neutral atom (net charge of zero), the number of protons is exactly equal to the number of electrons. So the number of electrons is also the same as the atomic number. However, it is possible to remove electrons and not change the identity of an element.

This is the Electron Cloud and Nucleus!!!

What are Valence Electrons- In chemistry, a valence electron is an electron that is associated with an atom, and that can participate in the formation of a chemical bond contribute one valence electron in order to form a shared pair.

This is the 2888888 pattern for drawing a(n) atom!!!
  1. 1.0079 Hydrogen H
  2. 4.0026 Helium He
  3. 6.941 Lithium Li
  4. 9.0122 Beryllium Be
This is Chemical Equation- A chemical equation consists of the chemical formulas of the reactants (the starting substances) and the chemical formula of the products (substances formed in the chemical reaction).
This is Balancing a Chemical Equation example(s)!!!

Chemical- *Ignites *Rusts *Tarnishes *Reacts w/ other elements or compounds *Oxides

Physical- *Density *Melting Point *Boiling Point *Freezing Point *State of Matter

Compare and Contrast Chemical and Physical changes- 1. Physical changes alter physical properties of a substance. These include breaking, melting, and dissolving. Usually, physical changes are easily reversible. The physical appearance may change, but the chemical composition remains the same. Chemical changes, on the other hand, change the substance into something completely different. For example, when an item rusts, the metal reacts with oxygen, forming a compound that resembles neither the metal nor oxygen: rust.

2. As you go from gas to liquid to solid, movement on the molecular level decreases. Thus, the molecules in gas move all over, but in the molecules in a solid remain mostly in the same place.

3. In a chemical reaction, energy can either be released (exothermic rxn) or absorbed (endothermic rxn).

Five signs of a chemical change- Some signs of a chemical change are a change in color and the formation of bubbles. The five conditions of chemical change: color change, formation of a precipitate, formation of a gas, odor change, temp change.

THE END!!!! (;
Created By
Haley Turbeville
Appreciate

Credits:

Created with images by Dominic's pics - "Thames Festival Finale Fireworks" • FontShop - "Periodic Table of Font Elements 1.1" • anderbill - "Mendeleev" • James St. John - "Gold mass (alluvial gold) (Kalgoorlie region, Western Australia) 1" • Beige Alert - "Chromium" • Arenamontanus - "1 of matter" • phylofigures - "1471-2148-12-4-5" • SweetChickaD - "Figure 4" • Zappy's - "Balancing Chemical Equation" • andreas160578 - "atom chemistry molecular"

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