Atoms and Periodic Table Mini-Lesson Benchmark SC.8.P.8.5 Recognize that there are a finite number of elements and that their atoms combine in a multitude of ways to produce compounds that make up all of the living and non-living things that we encounter ALSO ASSESSES: SC.8.P.8.6 Grouping of elements in the periodic table. SC.8.P.8.7 Subatomic particles and structure of the atom ESSENTIAL QUESTIONS: How can the number and location of subatomic particles be predicted? How are elements arranged on the periodic table?
Bellringer Living and nonliving things are made up of matter. Which of the following statements is true about matter? Nonliving and living things can be made up of combined elements. Living things are composed of carbon, hydrogen, and oxygen only. Living things are made up of elements, and nonliving things are made up of minerals. Nonliving things are composed of pure substances, while living things are made of more complex units.
Interactive Journal
Inside the atom…
Inside the nucleus of an atom…
Inside the nucleus of an atom…
Outside the nucleus…
Summary of Key Concepts Particle Charge Mass (AMU) Location Proton Positive 1 Nucleus Electron Negative 1/1830 ≈ 0 Electron Cloud Neutron No Charge
Determining the Number of Subatomic Particles: Atomic Mass Tells us the Protons + Neutrons of an atom of that element Atomic Number Shows the number of protons in the nucleus of the atom. Chemical Symbol A nickname for the element. In every atom, the number of protons and electrons are the same.
How Many Subatomic Particles? How many protons can be found in Calcium (Ca)? __________ How many electrons can be found in Calcium (Ca)? __________ How many neutrons can be found in Calcium (Ca)? __________ 20 20 20 # Neutrons = (Rounded) Atomic Mass – Atomic Number
"The Genius of Mendeleev's Periodic Table“ Ted Talk: "The Genius of Mendeleev's Periodic Table“ http://www.youtube.com/watch?v=fPnwBITSmgU
Horizontal rows are called PERIODS Periodic table Mendeleev The periodic table arranges all the elements in groups according to their properties. FAMILIES/ GROUPS share the same properties! (Columns) Horizontal rows are called PERIODS Add a Proton…
Example of a Group/Family Lithium, Sodium, Potassium, etc. share the same properties. Shiny Soft HIGHLY Reactive! http://www.youtube.com/watch?v=ODf_sPexS2Q
Bellringer Revisited: Living and nonliving things are made up of matter. Which of the following statements is true about matter? Nonliving and living things can be made up of combined elements.* Living things are composed of carbon, hydrogen, and oxygen only. Living things are made up of elements, and nonliving things are made up of minerals. Nonliving things are composed of pure substances, while living things are made of more complex units.
YOU DO TIME!
You Do Question #1 Which of the following statements best describes the basic structure of an atom? Electrons and protons are in motion around a nucleus that contains neutrons. Neutrons are in motion around a nucleus that contains protons and electrons. Protons are in motion around a nucleus that contains electrons and neutrons. Electrons are in motion around a nucleus that contains protons and neutrons. Correct Answer: D
You Do Question #2 Which of the following correctly describes a property of an atom? It has more protons than neutrons. It has a negative or positive charge. It has an equal number of protons and electrons. It has an equal number of neutrons and electrons. Correct Answer: D
You Do Question #3 Reference your periodic table to help you answer the following question. Which of the following elements would you expect to have chemical properties similar to Fluorine (F)? Argon (Ar), because they are both noble gasses. Beryllium, (Be) because they are in the same period. Chlorine (Cl), because they are found in the same group. Neon (Ne), because they have almost the same number of protons. Correct Answer: C
EXIT TICKET (CLOSING) How are the elements arranged on the periodic table and how can properties be predicted?