Do Now: 2/24/16 HW: Measuring Matter handout. Current Events # 9-12 Friday Do Now: 2/24/16 - Take out last nights homework - Molecules and Matter handout. Skip part B at the bottom.

S L L S L L S G S G S S S S L S S L L G/P G S S L

Examples: Solid-table, liquid-milk, and gas-used to cook with Examples: Solid-seats, liquid-gasoline, and gas-carbon dioxide Examples: Solid-teeth, liquid-blood, and gas-oxygen

solid liquid gas solid gas solid liquid gas solid

The Law of Conservation of Matter Notes: The Law of Conservation of Matter No matter how many reactants and products are involved…. …the mass before a reaction doesn’t change after the reaction takes place!

What do these symbols mean? In chemistry, symbols are used to express information in a shorter form.

Chemical Formula Vocabulary Notes: Chemical Formula Vocabulary Reactant: present at the start of a chemical reaction Product: present at the end of a chemical reaction Example: 2H2 + 02 2H20 Reactants Product

Another Example: Reactant: present at the start of a chemical reaction Product: present at the end of a chemical reaction Example: 4Fe + 302 2Fe2 03 Reactants Product

Conservation of Matter Lab Help yourself to a lab manual Page 3 Highlight or underline the “Introduction” of this lab as we read it aloud together.

Materials & Procedure We will only be performing Part A of this lab activity. Materials: Triple beam balance Vial with cap Water ¼ alka seltzer tablet

Conclusion Questions Answer the analysis questions independently BrainPOP: www.brainpop.com Conservation of Matter