Compound Notes Define these words: Compound ____________________________________________________________ ________________________________________________________________ Mixture ____________________________________________________________ ________________________________________________________________ Subscript _________________________________________________________ __________________________________________________________________ Use your book, pages 225 - 229 1 Are the properties of a compound similar to or different from the properties of the elements that make it up? 2. What is a chemical formula? ______________________________________________________________________ _____________________________________________________________________ 3. What is the formula for salt? _______________________________ 4. How many hydrogen atoms are in water? _________________________ 5. If there is no number written below an element’s symbol, then there is _______ atom of that element. 6. List the elements in battery acid. ______________________________________ 7. What are 3 examples of mixtures? _______________________________________ NOT IN THE BOOK 8. Why do mixtures not have a chemical formula? ________________________________________________________________ ________________________________________________________________ 9. If hydrogen and oxygen are both invisible gases, why do they form a liquid (water) when they combine? Cut out the facts from the half sheet of paper. Use the notes from the front of this paper or look back in the book to glue each fact in the correct box – compound or mixture. COMPOUNDS MIXTURES