Unit 2 Chemistry: Day 12 Elements, Compounds, and Chemical Formulas

Circle the compounds, but put a BOX around the elements.

Gold                            Salt                              Water             Ammonia

Titanium                    Yttrium                       Hydrogen       Hydrochloric acid

Nitroglycerin              Sugar                          Silver              Acetic acid

How can we tell if something is an element or compound? Write three tips.

   1)   ____________________________________________________________________ 

   2)   ____________________________________________________________________

   3)   ____________________________________________________________________

"Meet The Elements" Song

Understanding a Chemical Formulas

Try this… What elements are in this compound, and how many atoms of each?

NaHCO_{3: ___________________________________________________________________________________________________}

I guess that this compound is called: __________________________________________

CH_{4: ______________________________________________________________________________________________________}

I guess that this compound is called: __________________________________________

To be a chemist, you have to understand that compounds are written using chemical formulas.

Chemical Symbol: H, Fe, O, Ti, W

Chemical Formula: H₂O, FeO₂

·      Pick out what elements are in the compound using the symbol.

·      The small number after each element represents how many atoms of each element are in the compound.

·      You can also make an educated guess to the name of the compound

1. Now You Try On Your Own Check Yo Self:

2. Brainpop Video: Chemical Equations

Click here to watch video

• Watch Brainpop Video: Chemical Equations. 
• Take REVIEW QUIZ. 
• Once you have reached 80% email your results to kippcourage6science@gmail.com

Chemistry Day 11 Lifework: Understanding Compounds

Part 1: Write “C” for compound and “E” for element

______ 1. Sulfur

______ 2. Sulfuric acid

______ 3. Water

______ 4. Iron

______ 5. Sugar

______ 6. Uranium

______ 7. Lead

______ 8. Carbon dioxide

______ 9. Carbon monoxide

______ 10. Helium

______ 11. Ammonia

______ 12. Salt

______ 13. Arsenic

Part 2: Fill in the blanks. One is done for you.

14. Water (H₂O) is made of up of      2     atoms of hydgrogen and    1     atoms of   oxygen.    

15. Carbon dioxide (CO₂) is made up of _________ atoms of ___________________ and _______ atoms of ________________________.

16. Salt (NaCl) is made up of ___________ atoms of ____________________ and _______ atoms of _________________________.

17. Table sugar (C₁₂H₂₂O₁₁) is made up of __________ atoms of _____________________, ________ atoms of ______________________________ and __________ atoms of _______________________________.

18. Glucose or blood sugar in your body (C₆H₁₂O₆)  is made up of ______________ atoms of _____________________, ___________ atoms of ____________________________ and _____________ atoms of _______________________________.