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Introduction Administration.

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Presentation on theme: "Introduction Administration."— Presentation transcript:

1 Introduction Administration

2 Check list Some form of exercise book or folder
Beginning Chemistry book Put your name on it now! Complete Section One (Chapter 1 – 3) Course information booklet Website address A Periodic Table of Elements

3 Homework By the end of this year, the ENTIRE Beginning Chemistry Workbook will be completed. Unless otherwise stated… This is a self assigned work, you can either Complete it during the year Or complete it end of year Additional homework such as practice papers or worksheets is expected to be completed.

4 Foundational Chemistry
Introduction Foundational Chemistry

5 Matter Scientifically, matter is a physical substance which has a mass and is subject to time and space.

6 Matter Solid Liquid Gas Element Compound Pure Substance Mixture
Non-metallic Metallic Ionic molecular Cf. Boniface S., Bunn T., Sayes M., 2004, NCEA Level 2 Chemistry study guide, p. 110, ESA. Publications, Auckland.

7 Solid, Liquid, Gas and Aqueous
Matter Matter is made out of particles Particles attract each other Particles also absorb energy (eg. Heat) and move (Kinetic energy) Energy cannot be created nor destroy The different arrangement of particles are called the state There are four main states in Chemistry Solid, Liquid, Gas and Aqueous

8 Particles Made out of atom(s)
It can be a single atom or combinations of atoms When a particle is made out of only one type of atom (or a single atom), it is called a element. Eg. H2 or He When a particle is a combination of atoms of different elements, it is called a compound. Eg. H2O or NaCl

9 Atoms Atoms are made out of…
Protons- Positive charged particle in the nucleus and has AMU of 1 Neutrons- Neutral charged particle in the nucleus and has the AMU of 1 Electrons- negative charged particle “moving” around the nucleus The mass of the electron is so small that is commonly ignored in scientific model AMU = Atomic Mass Unit

10 The valence electrons Electrons in the highest occupied energy level (valence level) are called valence electrons. The valence electron configuration is the driving force of chemical reactivity. Only a fully completed valence level is chemically stable

11 Periodic table Scientists arrange each elements that is discovered into the periodic table The rows are called periods Elements have the same valence level The columns are called groups Elements have the same number of valence electron

12 Chemical Bonds Bonding occurs when atoms achieve a more stable electron arrangement. When bonds forms, energy is released Ionic bonds occurs when electrons are transferred from one atom to another -Forming ions (positive and negative) Covalent bonds occurs when electrons are shared between atoms -Forming molecules


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