Understanding Chemical Bonds and Strontium: Element of the Day

Feb 27, 2025

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Learn about ionic and covalent bonds with examples like LiCl and CO2, and discover the fascinating uses and properties of Strontium as the Element of the Day.

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Understanding Chemical Bonds and Strontium: Element of the Day

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Warm up 12/04/13 • Question: What type of bond: LiCl? CO2? • Answer: • LiCl = ionic (metal/non) • CO2 = covalent (2 non) • Goal: I will learn about two types of chemical bonds.
ELEMENT OF THE DAY • 38 – Strontium – Sr • Strontium-90 is a dangerous radioactive isotope present in nuclear fallout. • Strontium is used in glow-in-the-dark paints. • Sensodyne toothpaste’s active ingredient is a strontium compound. • Strontium alloyed with aluminum makes a metal that becomes harder after you bend it.
Bellwork • Notes on bonding • Review HW • Bonding Video • practice • Homework • pg14-18 Agenda

Warm-Up 11/13/12

Warm-Up 11/13/12. COPY and ANSWER the following questions on p. 38 in your INB. (Use pgs 472-476 in your textbook for help) What is the difference between temperature and heat? What are the three temperature scales? What is the relationship between thermal energy and temperature?

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Warm Up: 1/13/12

Warm Up: 1/13/12. Copy the following on a new notes page: Today’s Standard: SSH85b Essential Question: What types of conflict were caused by the westward expansion Georgia experienced in the early 1800’s?

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Warm Up 3/12

Warm Up 3/12. Look at your textbook (pgs.370-373). List at least 5 ways this play is written differently than typical fiction. In your opinion, what makes a play GOOD? . Warm-Up 3/13/13. CHOOSE ONE TO WRITE ABOUT: YOU NEED AT LEAST 5 SENTENCES!!!!

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Warm up 12/3/13

Warm up 12/3/13. What is manifest destiny and how did it affect westward expansion?. “The more Indians we can kill this year, the less will have to be killed the next war.”. -General William Tecumseh Sherman. Native Americans.

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Warm-up, Tuesday 11/12/13

Warm-up, Tuesday 11/12/13. 1. Apiary ā ‘ pē er ē (noun) a place where bees are raised for honey The honey farm had several large apiaries for raising bees and harvesting honey . Knowsys warm-up, Tuesday 11/12. 2. Brackish b ra’ kish

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Warm Up 11-12-13

Warm Up 11-12-13. What are the 5 properties of a mineral? What are two different types of tests you can do on a mineral to see what mineral it is?. Rocks and Minerals. Moh’s Scale of Hardness.

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Warm up 12/19/13

Warm up 12/19/13. Question: How many molecules are in a mole of water? Answer: 6.02 x10 23 molecules. Goal : I will learn to classify reactions. ELEMENT OF THE DAY. 46 – Palladium – Pd Palladium, like gold, can be pounded into thin sheets less than 1,000 atoms thick.

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Warm up 12/09/13

Warm up 12/09/13. Question: What would you call MgCl 2 ? RbI ? Answer: Magnesium Chloride Rubidium iodide Goal: I will learn how to name covalent compounds. Quick Recap . Valence Electrons Outermost Each group shares the same # and hence similar chemical properties Oxidation number

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Warm up 12/05/13

Warm up 12/05/13. Question: What is oxidation number? Answer: a number representing the charge on an atom after getting an octet . Ex: Na 1+ O 2- Goal: I will learn how to name ionic compounds. ELEMENT OF THE DAY. 39 – Yttrium – Y Yttrium is named after a village in Sweden .

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11-12/13 Warm Up:

11-12/13 Warm Up:. Can an institution (church, school, organization) be corrupt but at the same time make valuable contributions to society?. Turn in one 12 oz. can of food for the NGHS food bank and receive 10 late work passes. Two can max. Objective:.

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Warm up 12/18/13

Warm up 12/18/13. Question: Balance: Al + O 2 Al 2 O 3 Answer: 4Al +3O 2  2Al 2 O 3 Goal: I will learn to calculate formula mass. ELEMENT OF THE DAY. 45 – Rhodium – Rh

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Warm up 4/12/13

Warm up 4/12/13. Question : Where does an object on a rollercoaster have the most kinetic energy? Answer: At the lowest point on the rollercoaster. Goal: I will learn about energy transformations. Element of the day. 63 – Europium – Eu

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Warm up 12/11/13

Warm up 12/11/13. Question: What would you call NO? N 2 O 4 ? Answer: Nitrogen Monoxide Dinitrogen Tetroxide Goal: I will learn how to name polyatomic compounds. ELEMENT OF THE DAY. 41 – Niobium – Nb

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Warm Up : 12/2/13

Warm Up : 12/2/13 . Define the following terms from the “Elements of Thought” Wheel in your own words: 1. Purpose 2. Question at Issue 3. Information 4. Concepts. Objective and DOL. Objective. DOL. SWBAT explain, create, and understand the use of 4 fallacies: 1. Appeal to Pity

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Warm up 11/12/13

Warm up 11/12/13. Question: What is atomic mass? Answer: The weighted average of all isotopes of an element. Goal: I will build models of atomic nuclei. ELEMENT OF THE DAY. 29 – Copper – Cu Copper alloyed with tin makes bronze and alloyed with zinc makes brass .

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Warm-Up 12/16/13

Warm-Up 12/16/13. Teach the Teacher: Tell me about a time you felt out of place. Review: Which group has full outer orbitals? . Groups of elements and why they bond. Flash Card . On the front write: Luster. On the back write: Shininess . Flash Card . On the front write:

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Warm-Up – 12/13 – 10 minutes

Warm-Up – 12/13 – 10 minutes. Utilizing your notes and past knowledge answer the following questions: Define the Rate of Turn. Define Radius of Turn. What are the principal reasons an aircraft is certificated for weight and balance?

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Warm up 09/12/13

Warm up 09/12/13. Question: If you run a 5 km race, how many meters do you run? Answer: move decimal 3 to the right. 5,000 m Goal: I will learn how to take measurements that communicate resolution. ELEMENT OF THE DAY. 3 – Lithium - Li

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Warm-Up # 7 3/12/13

Warm-Up # 7 3/12/13. In humans, brown eyes (B) are dominant over blue (b)*. A brown-eyed man marries a blue-eyed woman and they have three children, two of whom are brown-eyed and one of whom is blue-eyed. 1) What is the man’s genotype? 2) The woman’s genotype?

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Honors Warm UP 12-9-13

Honors Warm UP 12-9-13. Mr. Anderson’s doctor has advised him to go on a diet. He must reduce his caloric intake by 15%. He currently eats 2,800 calories per day. Calculate his new daily caloric intake rate in two different ways. Be prepared to share your solutions. Reflection Questions.

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Warm-up 09/13/12

Warm-up 09/13/12. Copy down these two lines: “But let me briefly make my purpose plain; I preach for nothing but for greed of gain.” 1.) Mark the iambic pentameter in the lines. 2.) What is rhyme? Define, then mark it in the lines.

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Warm Up—Homeroom 12/5/13

Have your vocabulary flashcards on your desk so I can check them. DO NOT turn them in. Writing prompt #17: Using the information given in class, write a 5 paragraph essay answering the question “ Did the positives of the Industrial Revolution outweigh the negatives? Why or why not?”.

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