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Identify and describe the particles that make an atom. What are the 3 particles inside an atom & what charge does each have?

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Presentation on theme: "Identify and describe the particles that make an atom. What are the 3 particles inside an atom & what charge does each have?"— Presentation transcript:

1 Identify and describe the particles that make an atom. What are the 3 particles inside an atom & what charge does each have?

2  Protons: small particles in the nucleus of an atom. They have a positive charge.  Neutrons: small particles in the nucleus of an atom. They have no charge.  Electrons: tiny particles of an atom that move around the nucleus. They have a negative charge. + - N

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6 Atoms ALSO: Complete BrainPop Activity worksheet

7 H Hydrogen atu 1 Name: Date: Class#:

8 1 H Hydrogen atu 1 This is called the atomic number. It is always equal to the number of protons. Also, electrons = protons. ( Write this in your vocabulary!) The mass is measured in atomic units = atu This is called the atomic mass and is equal to protons + neutrons. (more vocabulary!) We round this number off to the nearest whole number, so for Hydrogen the mass is 1 atu Atomic Mass - Protons= # of Neutrons (add to 3 rd box) Name: Date: Period#:

9 1 H Hydrogen atu 1 atomic number = protons = electrons atomic units = atu atomic mass = protons + neutrons Round this number off to the nearest whole number Ex: Name: Date: Period#: Atomic mass – Atomic # = # of Neutrons Make your Notes pg. match this slide! Element Symbol Element Name “Nucleus #”

10 1 H Hydrogen 1 atu 1 Lets draw a hydrogen atom… = protons = electrons = protons + neutrons +

11 HYDROGEN + Electron (-) Proton (+)

12 2 He Helium atu Draw a Helium atom = protons = electrons Round off to 4 – 2 = 2 neutrons

13 HELIUM + + proton neutron electron (Negative) (positive) (neutral)

14 Draw a Carbon atom 6 C Carbon atu

15 This ring holds up to 2 electrons. This ring holds up to 8 electrons. Draw a Carbon atom 6 C Carbon atu

16 CARBON N N N N N N

17 N N N N N N

18 Use the following information to draw a sodium atom… Na Sodium 22.9 atu 11 = 11 protons = 11 electrons = 23 – 11 = 12 neutrons N +

19 Use the following information to draw a sodium atom… Na Sodium 22.9 atu 11

20 SODIUM ATOM N N N N N N N N N N N N

21 Al aluminum atu =protons = electrons Round off and subtract atomic mass from it = 14 neutrons

22 Use the following information to draw a aluminum atom… Al Aluminum 26.9 atu 13

23 N N N N N N N N N N N N NN protons = 13 electrons = 13 neutrons = 14 Holds up to 8 Holds up to 2

24 The Musical Table Of Elements ments.html DDiWtFtEM&safe=active


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