Atomic Number of protons and electrons Symbol Symbol
![• Atomic Number # of protons and electrons • Symbol – Symbol of • Atomic Number # of protons and electrons • Symbol – Symbol of](https://slidetodoc.com/presentation_image_h/0e434eb677cd929c858b4082b1030228/image-1.jpg)
• Atomic Number # of protons and electrons • Symbol – Symbol of element • Name – Name of element • Atomic Mass – average weight (protons and neutrons)
![= # of Atomic Number Protons Electrons - (minus) = # of Mass Number = # of Atomic Number Protons Electrons - (minus) = # of Mass Number](http://slidetodoc.com/presentation_image_h/0e434eb677cd929c858b4082b1030228/image-2.jpg)
= # of Atomic Number Protons Electrons - (minus) = # of Mass Number Atomic Number Neutrons
![WHAT IS AN ATOM? • Atoms are tiny particles too small to see with WHAT IS AN ATOM? • Atoms are tiny particles too small to see with](http://slidetodoc.com/presentation_image_h/0e434eb677cd929c858b4082b1030228/image-3.jpg)
WHAT IS AN ATOM? • Atoms are tiny particles too small to see with your eyes or basic microscope • Atoms have mass and take up space, therefore… • Atoms are the basic building blocks of matter – all matter is composed of atoms.
![WHAT IS AN ATOM? https: //www. youtube. com/watch? v=o. SCX 78 -8 -q 0 WHAT IS AN ATOM? https: //www. youtube. com/watch? v=o. SCX 78 -8 -q 0](http://slidetodoc.com/presentation_image_h/0e434eb677cd929c858b4082b1030228/image-4.jpg)
WHAT IS AN ATOM? https: //www. youtube. com/watch? v=o. SCX 78 -8 -q 0
![Atomic Structure • Center of an atom is the nucleus • The nucleus is Atomic Structure • Center of an atom is the nucleus • The nucleus is](http://slidetodoc.com/presentation_image_h/0e434eb677cd929c858b4082b1030228/image-5.jpg)
Atomic Structure • Center of an atom is the nucleus • The nucleus is made up of protons and neutrons • Electrons surround the nucleus v. Protons – positive (+) v. Neutrons – neutral (0) v. Electrons – negative (-)
![COMPOUNDS HAVE FORMULAS H 2 O = Water H 2 O 2 = Hydrogen COMPOUNDS HAVE FORMULAS H 2 O = Water H 2 O 2 = Hydrogen](http://slidetodoc.com/presentation_image_h/0e434eb677cd929c858b4082b1030228/image-6.jpg)
COMPOUNDS HAVE FORMULAS H 2 O = Water H 2 O 2 = Hydrogen peroxide • The subscript represents the number of atoms for that element. NEVER ERASE A SUBSCRIPT
![Na 2 SO 4 2 sodium atoms 1 sulfur atom 4 oxygen atoms Na 2 SO 4 2 sodium atoms 1 sulfur atom 4 oxygen atoms](http://slidetodoc.com/presentation_image_h/0e434eb677cd929c858b4082b1030228/image-7.jpg)
Na 2 SO 4 2 sodium atoms 1 sulfur atom 4 oxygen atoms
![HCl 1 hydrogen atom 1 chlorine atom HCl 1 hydrogen atom 1 chlorine atom](http://slidetodoc.com/presentation_image_h/0e434eb677cd929c858b4082b1030228/image-8.jpg)
HCl 1 hydrogen atom 1 chlorine atom
![COMPOUNDS HAVE FORMULAS 3 H 2 O = Water 2 H 2 O 2 COMPOUNDS HAVE FORMULAS 3 H 2 O = Water 2 H 2 O 2](http://slidetodoc.com/presentation_image_h/0e434eb677cd929c858b4082b1030228/image-9.jpg)
COMPOUNDS HAVE FORMULAS 3 H 2 O = Water 2 H 2 O 2 = Hydrogen peroxide • The coefficient represents the amount of each molecule present
![2 Na. Cl 2 sodium atoms 2 chlorine atoms 2 Na. Cl 2 sodium atoms 2 chlorine atoms](http://slidetodoc.com/presentation_image_h/0e434eb677cd929c858b4082b1030228/image-10.jpg)
2 Na. Cl 2 sodium atoms 2 chlorine atoms
![2 Na 2 SO 4 4 sodium atoms 2 sulfur atoms 8 oxygen atoms 2 Na 2 SO 4 4 sodium atoms 2 sulfur atoms 8 oxygen atoms](http://slidetodoc.com/presentation_image_h/0e434eb677cd929c858b4082b1030228/image-11.jpg)
2 Na 2 SO 4 4 sodium atoms 2 sulfur atoms 8 oxygen atoms
![Na 2(SO 4)2 2 sodium atoms 2 sulfur atoms 8 oxygen atoms Na 2(SO 4)2 2 sodium atoms 2 sulfur atoms 8 oxygen atoms](http://slidetodoc.com/presentation_image_h/0e434eb677cd929c858b4082b1030228/image-12.jpg)
Na 2(SO 4)2 2 sodium atoms 2 sulfur atoms 8 oxygen atoms
![2 Na 2(SO 4)2 4 sodium atoms 4 sulfur atoms 16 oxygen atoms 2 Na 2(SO 4)2 4 sodium atoms 4 sulfur atoms 16 oxygen atoms](http://slidetodoc.com/presentation_image_h/0e434eb677cd929c858b4082b1030228/image-13.jpg)
2 Na 2(SO 4)2 4 sodium atoms 4 sulfur atoms 16 oxygen atoms
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![What is the Law of Conservation of Mass? Counting atoms due today! Adopt-an. Element What is the Law of Conservation of Mass? Counting atoms due today! Adopt-an. Element](http://slidetodoc.com/presentation_image_h/0e434eb677cd929c858b4082b1030228/image-15.jpg)
What is the Law of Conservation of Mass? Counting atoms due today! Adopt-an. Element projec due yesterday
![BALANCING CHEMICAL EQUATIONS A chemical reaction is shown in as a chemical equation BALANCING CHEMICAL EQUATIONS A chemical reaction is shown in as a chemical equation](http://slidetodoc.com/presentation_image_h/0e434eb677cd929c858b4082b1030228/image-16.jpg)
BALANCING CHEMICAL EQUATIONS A chemical reaction is shown in as a chemical equation
![• The amount of matter does not change during a chemical reaction. Matter • The amount of matter does not change during a chemical reaction. Matter](http://slidetodoc.com/presentation_image_h/0e434eb677cd929c858b4082b1030228/image-17.jpg)
• The amount of matter does not change during a chemical reaction. Matter is neither created, nor destroyed • The atoms are rearranged to form new substances
![The arrow means “yields” The arrow means “yields”](http://slidetodoc.com/presentation_image_h/0e434eb677cd929c858b4082b1030228/image-18.jpg)
The arrow means “yields”
![STEPS WHEN SOLVING A CHEMICAL EQUATION 1. Write the equation 2. Draw a line STEPS WHEN SOLVING A CHEMICAL EQUATION 1. Write the equation 2. Draw a line](http://slidetodoc.com/presentation_image_h/0e434eb677cd929c858b4082b1030228/image-19.jpg)
STEPS WHEN SOLVING A CHEMICAL EQUATION 1. Write the equation 2. Draw a line 3. List elements 4. Count atoms 5. Balance
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